Tutors Answer Your Questions about test (FREE)
Question 1010498: The functions f(x) and g(x) in the table below show Jane's and Mariah's savings respectively, in dollars, after x days. Some values are missing in the table.
x(years) 1 2 3
g(x) = 3x
Jane's savings in dollars 3 9
f(x) = 3x + 3
Mariah's savings in dollars 6 9
Which statement best describes Jane and Mariah's savings in the long run?
Click here to see answer by MathLover1(20849)   |
Question 1012254: A swimming pool is 50metres long and 15metres wide.Its shallow and deep ends are 3/2 metres and9/2 metres deep respectively.If the bottom of the pool slopes uniformly, find the amount of water required to fill the pool.
Click here to see answer by rothauserc(4718)  |
Question 1013078: Hi! The problem is: An ice cream parlor makes $200. They sell cups of ice cream for $0.60 and cones for $2. How much cups of ice cream did they sell? How much cones of ice cream did they sell?
Thanks so much for your help!
I've tried to divide $200 by 0.60 but what about the cones?
Click here to see answer by josmiceli(19441)  |
Question 1013496: This problem was given with the instructions to "Verify". PLEASE explain how both sides of the equation are equal to each other. I am a little bit unclear. Would you use variations?
cot^2(a)= cos^2(a)+ cot(a)*cos(a)
Click here to see answer by Alan3354(69443)  |
Question 1014593: Please help me solve this problem, I have answered most of the questions, but I would really appreciate it if you would look over my answers and tell me if I am wrong and help me correct the mistakes. I mostly need help with e) and g).
Use the function 2e^(-5x^2) to answer each question.
a) State the domain:
I wrote the domain as x is an element of all real numbers
b) Determine the intercepts, if any:
I found that there was no x-intercept, and a y-intercept at (0,2)
c) Discuss the symmetry of the graph:
I said the graph is symmetric with respect to the y-axis because the function is even.
d) Find any asymptotes:
I found no vertical asymptote, and a horizontal asymptote at y=0.
e) Determine the intervals of increase and decrease:
I need help with this.
f) What is the maxima and/or minima:
Maxima is 2 at x=0, no minima value.
g) Where is the curve concave upward and downward:
I need help with this.
h) Locate the points of inflection:
I don't know if this is right or wrong but i calculated them as
( -(1/sqrt(10)), 2/sqrt(e) ) and ( 1/sqrt(10), 2/sqrt(e) )
i) Graph the function:
I've already graphed it.
Thank-you, your help is always appreciated!
Click here to see answer by stanbon(75887) |
Question 1014593: Please help me solve this problem, I have answered most of the questions, but I would really appreciate it if you would look over my answers and tell me if I am wrong and help me correct the mistakes. I mostly need help with e) and g).
Use the function 2e^(-5x^2) to answer each question.
a) State the domain:
I wrote the domain as x is an element of all real numbers
b) Determine the intercepts, if any:
I found that there was no x-intercept, and a y-intercept at (0,2)
c) Discuss the symmetry of the graph:
I said the graph is symmetric with respect to the y-axis because the function is even.
d) Find any asymptotes:
I found no vertical asymptote, and a horizontal asymptote at y=0.
e) Determine the intervals of increase and decrease:
I need help with this.
f) What is the maxima and/or minima:
Maxima is 2 at x=0, no minima value.
g) Where is the curve concave upward and downward:
I need help with this.
h) Locate the points of inflection:
I don't know if this is right or wrong but i calculated them as
( -(1/sqrt(10)), 2/sqrt(e) ) and ( 1/sqrt(10), 2/sqrt(e) )
i) Graph the function:
I've already graphed it.
Thank-you, your help is always appreciated!
Click here to see answer by solver91311(24713)  |
Question 1014579: Please help me solve this problem:
3a. The antiderivative of f(x)=2/x is written as f(x)=2In|x|. Why must the absolute value symbol be used?
3b. By applying the rules for natural logarithms, how could the answer in question 3a. be expressed so that the absolute value symbol is not required?
Thank-you, your help is always appreciated!
Click here to see answer by rothauserc(4718) |
Question 1014962: When Michael buys an order of printer paper from the office supply store, he pays $20 for the first box and $15 for each additional box. Which of the following expression represents the total cost, in dollars, of an order of b boxes of paper?
Click here to see answer by ikleyn(52747)  |
Question 1014962: When Michael buys an order of printer paper from the office supply store, he pays $20 for the first box and $15 for each additional box. Which of the following expression represents the total cost, in dollars, of an order of b boxes of paper?
Click here to see answer by fractalier(6550)  |
Question 1014991: Please help me solve this problem:
1. Determine the intervals of increase and decrease of y=2e^(-5x^2)
2. Where is the curve of the graph y=2e^(-5x^2) concave upward and downward?
Thank-you, your help is always appreciated!
Click here to see answer by Fombitz(32388)  |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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