Solve the problem.When making a telephone call using a calling card, a call lasting 6 minutes cost $0.95. A call lasting 15 minutes cost $1.85. Let f(x) be the cost of making a call lasting x minutes using a calling card. Write a linear function that models the cost of a making a call lasting x minutes.
A. f(x) = -0.1x + 1.55
B. f(x) = 10x - 
C. f(x) = 0.1x + 0.35
D. f(x) = 0.1x - 13.15
Answer: C
Mathematics
You might also like to view...
Simplify.-6x3(-3x + 5)
A. -12x3 B. 18x - 30 C. 18x4 + 5 D. 18x4 - 30x3
Mathematics
Find the volume of the indicated region.the region enclosed by the paraboloids 
and 
A. 10,000? B. 30,000? C. 40,000? D. 20,000?
Mathematics
Evaluate the integral.
A. 
B. 
C. 
D. 
Mathematics
Write the percent as a fraction or mixed number. Then simplify completely.7%
A. 
B. 
C. 
D. 7
Mathematics