Answer the question.Choose the expression that is equivalent to the following: 7 - 7
A. (-2)(7)
B. 2(7)
C. 7 + (-7)
D. (7)(7)
Answer: C
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Evaluate the expression when x is 
. Use exact values.
?
7 cos 3x
?
A. 0 B. 7 C. 3 D. 0 E. -3
Simplify.85 - 18(3) + 140 ÷ (-10)
A. 17 B. -21 C. 187 D. -958
Solve the problem.(a) All items in an ice cream truck cost $1.09 per item. Fill in the chart with the correct response for the total cost C(x) if x items are purchased. (b) Write the linear function which gives C(x).
A. (a) $1.09; $2.18; $3.27; $4.36 (b) C(x) = 1.09x + 1.09 B. (a) $0; $1.09; $1.09; $1.09 (b) C(x) = 1.09 C. (a) $0; $1.09; $2.18; $3.27 (b) C(x) = 1.09x D. (a) None is correct. (b) None is correct.
Find an equation of the line having the specified slope and containing the indicated point. Write your answer in slope-intercept form.m = - 
; (3, -1)
A. f(x) = 
x - 
B. f(x) = - 
x + 
C. f(x) = - 
x + 2
D. f(x) = - 
x + 