Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

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Question 63455: Solve. 80 = 10x
Click here to see answer by checkley71(8403)

Question 63459: Translate the following statement into an algebraic equaion. Let x represent the number.
12 less than 5 times a number is 18.

Click here to see answer by qwer(1)

Question 63484: An 800 g solution of acid and water contains 128 g of acid. What percent of the solution is acid?
Click here to see answer by x5eagles(1)

Question 63479: Solve. 8x � 11 = 2x + 1
Click here to see answer by bubblz190(11)

Question 63454: Solve. 4(7x + 10) = 3(9x � 5) + 20
Click here to see answer by bubblz190(11)

Question 63452: Solve. 10x � 1/4 = 9x + 3/8
Click here to see answer by bubblz190(11)

Question 63483: Allen bought 20 stamps at the post office in 37� and 20� denominations. If the total cost of the stamps was $7.06, how many 37� stamps did Allen buy?
Click here to see answer by stanbon(75887)

Question 63481: Ricardo is 4 years less than twice as old as his sister. The sum of their ages is 20. How old is Ricardo?
Click here to see answer by joyofmath(189)

Question 63478: Solve. 2/5x = –10
Click here to see answer by rchill(405)

Question 63480: Solve. 2/5 x – 6 = 12
Click here to see answer by rchill(405)

Question 63482: One number is 6 more than another. If the sum of the smaller number and 3 times the larger number is 34, find the two numbers.
Click here to see answer by ptaylor(2198)

Question 63456: Find the length of each side of the rectangle so that it has the given perimeter. 2x-5

x
P=50 inches
Click here to see answer by checkley71(8403)

Question 63643: 2/5x-6=12
Click here to see answer by stanbon(75887)

Question 63645: 4/5+1/10
Click here to see answer by stanbon(75887)

Question 63642: Solve. 8x � 11 = 2x + 1
Click here to see answer by joyofmath(189)

Question 63641: One number is 6 more than another. If the sum of the smaller number and 3 times the larger number is 34, find the two numbers.
Click here to see answer by joyofmath(189)

Question 63701: 10x-1/4=9x+3/8
Click here to see answer by checkley71(8403)

Question 63700: 4(7x + 10) = 3(9x � 5) + 20
Click here to see answer by checkley71(8403)

Question 63697: Ricardo is 4 years less than twice as old as his sister. The sum of their ages is 20. How old is Ricardo?
Click here to see answer by checkley71(8403)

Question 63699: Which label describes the following?
3x + 6 = 10
Expression
Linear equation
Equation which is not linear

Click here to see answer by praseenakos@yahoo.com(507)

Question 63819: CAN YOU PLEASE HLP ME FIND THE ASYMPTOTES OF Y=(X+1)/(X-5)
Click here to see answer by stanbon(75887)

Question 63959: calculate the first derivative f'(x) for each of the following. Express your final answers using positive exponents
A. f(x)= 5/6x^3/4 + 5/6x^3/2 + 2/5x^3/2
B. f(x)=3/2x^3/2 + 3/2x^3/4 + 3/2x^2/3
C.f(x)= 5/6x^3/4 + 5/6x^3/2

I NEED HELP WITH THESE PROBLEMS...I WOULD APPRECIATE THE HELP..I'VE TRIED TO DO THEM BUT IT DOESN'T COME OUT RIGHT...
Click here to see answer by funmath(2933)

Question 63961: determine the critical numbers and the critical points for each of the following functions
A. f(x)= x^3 + 13x^2 + 7x - 165
B. g(x)= X^3 +6x^2 - 13x - 42
C. h(x)= x^3-10x^2 + 7x + 18
THESE PROBLEMS ARE TOUGH....I REALLY NEED HELP WITH THEM...I TRIED DOING THEM BUT THE ANSWERS AREN'T RIGHT BECAUSE I KNOW THERE ARE SUPPOSED TO BE 2 ANSWERS 4 EACH BUT IM NOT SURE HOW TO GET THE SECOND NUMBER...PLEASE HELP...THANK YOU

Click here to see answer by funmath(2933)

Question 64005: Please help me with this, I need as much help as I can get
If f(x)=2^x,describe the transformation of the curve for g(x)=-2^x-2

Click here to see answer by stanbon(75887)

Question 64007: Thanks for your continued help.
Can you Solve the following 2 equation:
x^2e^x-5xe^x=0
5^3x=5^4x-2

Click here to see answer by stanbon(75887)

Question 64054: When x number of units are sold, the price of each unit (in
dollars) is given by P=-x/2+75. Find the unit price when the following quantities
are sold: 2, 7, 9, 11.
Click here to see answer by checkley71(8403)

Question 64053: Science and medicine. Celsius temperature readings can be converted to
Fahrenheit readings using the formula E=9/5C+32. What is the Fahrenheit
temperature that corresponds to each of the following Celsius temperatures: -10,
0, 15, 100?
Click here to see answer by checkley71(8403)

Question 64024: I need your help and I do appreciate it Thanks
Expand the following expression: log3 P^3 / R
Click here to see answer by stanbon(75887)

Question 64024: I need your help and I do appreciate it Thanks
Expand the following expression: log3 P^3 / R
Click here to see answer by jai_kos(139)

Question 64019: Can you help me please?
8. Rewrite in exponential form: log2 32 = x
9. Write in logarithmic form: M = tp

Click here to see answer by jai_kos(139)

Question 64095: what would be the domain of this equation:
The square root of 9-4x. All is included under the radical!
thanks
Click here to see answer by Edwin McCravy(20056)

Question 64095: what would be the domain of this equation:
The square root of 9-4x. All is included under the radical!
thanks
Click here to see answer by venugopalramana(3286)

Question 64049: 3x + 4y = 12 (0, ),( ,3/4),( ,0),(8/3, )
Click here to see answer by funmath(2933)

Question 63979: Work backward to solve.
Manuel's term paper is due on MArch 31. He began doing reasearch on March 1. He intends to continue doing reasearch for 3 times as long as he has done already. Then he will spend a week writing the paper and the remaining 3 days typing. What day is it?
Click here to see answer by 303795(602)

Question 64057: 2x + 3y = 6
Click here to see answer by stanbon(75887)

Question 64056: y=3/4x+2
Click here to see answer by stanbon(75887)

Question 64120: what is de anwer for

2(7)+5
Click here to see answer by checkley71(8403)

Question 64194: Please help me with these problems,
Expand the following expression: log3 P^3/R
and find X: log3 27=x
find x: log3 27=xlogb x= 3logb 2+1/2 logb 25-logb 20
thank you
Click here to see answer by tanimachatterjee(60)

Question 64222: i have a take home test and i need help with but it isnt in any of the books pages can you still help me?
Click here to see answer by stanbon(75887)

Question 64254: if f(x) = 2x^2 (^2 means squared) then find f(2) and f(4c)
Click here to see answer by praseenakos@yahoo.com(507)

Question 64253: the question is:
solve [x-5] = 2....
Click here to see answer by praseenakos@yahoo.com(507)

Question 64252: I cant seem to find the answer to this math problem... let along try to solve it.
the question is: if f(x) = 3x^2(squared) then find f(4) and f(3b)
Click here to see answer by praseenakos@yahoo.com(507)

Question 64263: write the function form of 4x-2y=18
Click here to see answer by funmath(2933)

Question 64272: The cost of producing a number of items x is given by
C = mx = b, in which b is the fixed cost and m is the variable cost (the cost of
producing one more item).
(a) If the fixed cost is $40 and the variable cost is $10, write the cost equation.
(b) Graph the cost equation.
Click here to see answer by funmath(2933)

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