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 + 0.35
B. f(x) = -0.1x + 1.55
C. f(x) = 0.1x - 13.15
D. f(x) = 10x - 
Answer: A
Mathematics
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Simplify the expression, and combine like terms.3n(m + 12n) + 7(6mn + 11n2)
A. 45mn + 77n2 + 36n B. 45mn + 11n2 + 12n C. 16mn + 33n2 D. 45mn + 113n2
Mathematics
Find f(x) and g(x) such that h(x) = (f ? g)(x).h(x) = 
+ 2
A. f(x) = 
, g(x) = 
+ 2
B. f(x) = 
, g(x) = 2
C. f(x) = x, g(x) = 
+ 2
D. f(x) = x + 2, g(x) = 
Mathematics
Solve.
+ 
= 
A. 
B. 0
C. - 
D. 
Mathematics
Compute the difference. Express answer in simplest form.
- 
A. 
B. 2
C. 1
D. 
Mathematics