Evaluate the algebraic expression for the given value(s).
, given x = 5, y = 3
A. 
B. 3
C. 1
D. 21
Answer: B
Mathematics
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Solve.When making a telephone call using a calling card, a call lasting 5 minutes cost $0.90. A call lasting 12 minutes cost $1.60. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that models the cost of making a call lasting x minutes.
A. y = 0.1x + 0.4
B. y = -0.1x + 1.4
C. y = 0.1x - 10.4
D. y = 10x - 
Mathematics
Use the even-odd properties to find the exact value of the expression. Do not use a calculator.cot 
A. -
B. 1
C. -1
D. - 
Mathematics
Solve by using the quadratic formula.x2 + 18x + 71 = 0
A. 9 ± 
B. -18 + 
C. -9 ± 
D. 9 + 
Mathematics
Find the average rate of change for the function between the given values.f(x) = 
; from 4 to 7
A. - 
B. 2
C. 
D. 7
Mathematics