Choose the equation that matches the graph.
A. 
- 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
- 
= 1
Answer: C
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Solve the problem.Midtown Antiques collects 5% sales tax on all sales. If total sales including tax are $1,448.11, find the portion that is the tax amount. Round to the nearest cent.
A. $58.96 B. $68.96 C. $72.41 D. $1,379.15
Solve the problem.At Allied Electronics, production has begun on the X-15 Computer Chip. The total revenue function is given by 
and the total profit function is given by 
, where x represents the number of boxes of computer chips produced. The total cost function, C(x), is such that 
Find C(x).
A. C(x) = 10x + 10 B. C(x) = 12x + 6 C. C(x) = 11x + 15 D. C(x) = -0.3x2 + 20x + 10
Graph the quadratic equation.y = x2 + 2x + 1
A. 
B. 
C. 
D. 
Rewrite the following as a product of trigonometric functions.sin 
+ sin 
A. 2 cos 
sin 
B. 2 sin 
sin 
C. 2 cos 
cos 
D. 2 sin 
cos 