Graph the polar equation.r sin ? = -1
A. 
B. 
C. 
D. 
Answer: D
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Provide an appropriate response.An I-beam measures 14 ft long. How many whole 
ft pieces can be cut from this length?
A. 5 B. 6 C. 7 D. 8
Provide an appropriate response.Use a compass and straightedge to construct an angle of 45°.
What will be an ideal response?
Solve the system by the addition method.x2 + y2 - 4x + 8y + 19 = 0 x2 - y2 - 4x - 8y - 13 = 0
A. {(3, -4), (-1, -4)} B. {(3, -4), (1, -4)} C. {(2, 3), (2, 5)} D. {(2, -3), (2, -5)}
Solve the problem.When making a telephone call using a calling card, a call lasting 6 minutes cost $2.80. A call lasting 13 minutes cost $5.60. 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 making a call lasting x minutes.
A. f(x) = 0.4x - 7.4
B. f(x) = 
x - 
C. f(x) = -0.4x + 5.2
D. f(x) = 0.4x + 0.4