Solve.The cost of renting a certain type of car is $40 per day plus $0.10 per mile. A linear function that expresses the cost C of renting a car for one day as a function of the number of miles driven x is 
What are the independent and dependent variables?
A. The independent variable is the number of miles driven, x. The dependent variable is the cost C.
B. The independent variable is 40. The dependent variable is 0.10.
C. The independent variable is the cost, C. The dependent variable is the number of miles driven, x
D. The independent variable is the number of days, x. The dependent variable is the cost C.
Answer: A
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Find the derivative.s = t8 - csc t + 18
A. 
= 8t7 + cot2t
B. 
= 8t7 - csc t cot t
C. 
= t7 - cot2t + 18
D. 
= 8t7 + csc t cot t
Evaluate the integral.
A. 
ln 
+ C
B. 
ln 
+ C
C. 2
+ 2
tan-1 
+ C
D. 
tan-1 
+ C
If a=7.8, b= 3.2 are two legs of a right triangle find cos A
What will be an ideal response?
Solve the problem.A car rental firm charged $25 per day or portion of a day to rent a car for a period of 1 to 6 days. Days 7 to 9 were then "free," while the charge for days 10 through 15 was again 
per day. Let 
represent the total cost to rent the car for t days, where 
Find the total cost of a rental for 
A. $100 B. $28 C. $75 D. $25