Tutors Answer Your Questions about Finance (FREE)
Question 1096819: Can someone help me to finish this problem. Thanks for help.
The pressure of the oil in reservoir tends to drop with time. By taking sample pressure readings for a particular oil reservoir, petroleum engineers have found that the change ..... is given by the function P(t)=t^3-18t^2+81t where t is time in years from the date of the first reading.
a) Find P(0), P(3), P(5), P(10)
Over what period is the change(drop) in pressure decreasing; 3 to 10 or 3 to 9?
___________________________________
a) P(0)=0 right?
b) P(3)=3^-18*3^2+81*3
P(3)=90
c) P(5)=?
d) P(10)=?
How to do the P(5) and P(10)?
Over what period is the change(drop) in pressure decreasing; 3 to 10 or 3 to 9?
Click here to see answer by Boreal(15235)  |
Question 1096824: --------------- QUESTION FOLLOWS --------------------------
Can someone please help me to finish this problem? Thank you.
The charge to rent a trailer is $30 for up to 2 hours plus $9 per additional hour or portion on an hour.
Find the cost to rent a trailer for 3.7 hours, 4 hours and 8.6 hours.
Then graph all ordered parts (hours, cost)
a) What is the cost to rent for 3.7 hours?
b) What is the cost to rent for 4 hours?
c) = = = = for 8.6 hours?
d) = = = = for 9 hours?
_________________________________________________
a) 2x30+2x9=$78 is this correct?
How to do it the rest?
Click here to see answer by jorel1380(3719)  |
Question 1096814: Can someone please help me to finish this problem? Thank you.
The charge to rent a trailer is $30 for up to 2 hours plus $9 per additional hour or portion on an hour.
Find the cost to rent a trailer for 3.7 hours, 4 hours and 8.6 hours.
Then graph all ordered parts (hours, cost)
a) What is the cost to rent for 3.7 hours?
b) What is the cost to rent for 4 hours?
c) = = = = for 8.6 hours?
d) = = = = for 9 hours?
_________________________________________________
a) 2x30+2x9=$78 is this correct?
How to do it the rest?
Click here to see answer by MathTherapy(10552)  |
Question 1096790: Miguel owns a business that sells snowboards. The profit function for his business can be modelled by the equation P(x)= -2x^+26x-11 ,where x is the quantity sold, in thousands, and P(x) is the profit in thousands of dollars.
How many snowboards must Miguel sell in order for his business to break even?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1096884: A car dealership has 7 red, 14 silver, and 4 black cars on the lot. Ten cars are randomly chosen to be displayed in front of the dealership.
a) Find the probability that 4 cars are red and that the rest are silver.
b) Find the probability that 6 cars are red and 4 cars are black.
c) Find the probability that exactly 7 cars are red.
HELP. Please answer with Full Details.
Thank you
Click here to see answer by greenestamps(13200)  |
Question 1096881: To save for retirement karla harby put $650 each month into an ordinary annuity for 14 years. Interest was compounded monthly. At the end of the 14 years, the annuity was worth $154,986. What annual interest rate did she receive?
Please answer with Full Details.
Thank you
Click here to see answer by greenestamps(13200)  |
Question 1096880: Tuition of $1330 will be due when the spring term begins in 7 months. What amount should a student deposit today, at 3.96%, to have enough to pay the tuition?
Please answer with Full Details, including any calculator steps, etc.
Thank you very much.
Click here to see answer by jorel1380(3719)  |
Question 1096980: Toni rows a boat 4.5 km/h upstream and then turns around and rows 5.5 km/h back
downstream to her starting point. If her total rowing time is 48 min, for how long does she
row upstream? Express your answer to the nearest minute.
A about 44 min
B about 26 min
C about 24 min
D about 30 min
Click here to see answer by greenestamps(13200)  |
Question 1096967: A car dealership has 7 red, 14 silver, and 4 black cars on the lot. Ten cars are randomly chosen to be displayed in front of the dealership.
a) Find the probability that 4 cars are red and that the rest are silver.
b) Find the probability that 6 cars are red and 4 cars are black.
c) Find the probability that exactly 7 cars are red.
HELP. Please answer with Full Details ONLY. I need to know Exactly how to enter the information into a calculator to solve. Ex. How do I solve this? (6C4*14C6)/(25C10)
Click here to see answer by greenestamps(13200)  |
Question 1096946: Customers at the Palace Pro Shop receive a 10% discount if they are members. All customers must pay 7% in sales tax. The function f (x ) = 0.9x is used to determine the price of an item after the 10% member discount, where x is the regular price of the item. The function g(x ) =1.07x is used to determine the total amount customers pay for a purchase after all discounts are applied. Which function can be used to determine T (x ), the total amount a member pays for an item with a regular price of x dollars?
A. T (x ) = 0.17x
B. T (x ) = 0.963x
C. T (x ) =1.19x
D. T (x ) =1.97x
Click here to see answer by jorel1380(3719)  |
Question 1097173: A ball is thrown into the air with an upward velocity of 36 ft/s. Its height h in feet after t
seconds is given by the function h=-16t^2+36t+9.
a. In how many seconds does the ball reach its maximum height? If necessary, round to
the nearest hundredth.
b. What is the maximum height of the ball?
A 1.13 s; 69.75 ft
B 1.13 s; 29.25 ft
C 1.13 s; 31.5 ft
D 2.25 s; 9 ft
Click here to see answer by Alan3354(69443)  |
Question 1097431: By working 8 hours per day, Marley's team can complete a task in 15 1/2 days. Bill's team works on the same task at the same speed; however, Bill's team works 7 hours and 45 minutes per day. How many days does it take Bill's team to complete the task?
Click here to see answer by Boreal(15235)  |
Question 1097431: By working 8 hours per day, Marley's team can complete a task in 15 1/2 days. Bill's team works on the same task at the same speed; however, Bill's team works 7 hours and 45 minutes per day. How many days does it take Bill's team to complete the task?
Click here to see answer by greenestamps(13200)  |
Question 1097554: It takes 10 min to fill a bathtub with the tap on full. It takes 15 min to drain the same bathtub. How long will it take to fill the bathtub with the tap on full and the plug pulled out after 1 min of running water?
When the tap turned on full, 1 min fills up 1/10 of a bathtub.
When the plug pulled out, 1 min drains out 1/15 of the same bathtub.
With the tap turned on full and the plug pulled out, 1 min fills up 1/10-1/15 = ____ of a bathtub.
How long will it take to fill the bathtub?
Click here to see answer by ikleyn(52781)  |
Question 1097553: John and Mary operate wood splitters for fireplace wood. John's machine can split a pile of wood in 4 days. Mary can do the same in 3 days. They work 8h/d. How long will it take them to split the pile of wood using both machines?
Click here to see answer by ikleyn(52781)  |
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