Solve the proportion.
= 
A. 48
B. 18
C. 6
D. 144
Answer: B
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Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 7
+ 3
A. 10
B. 10
C. 10
D. 21
Find the value of the trigonometric function.cot (218.35°)
A. -1.264 B. -0.7912 C. 1.264 D. 0.7912
The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 12 sin t - cos tFind the body's acceleration at time t = ?/4 sec.
A. - 
m/sec2
B. 
m/sec2
C. - 
m/sec2
D. 
m/sec2
Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest dollar when necessary.A store sells an item for $550 each. If this is a 39.8% markup on the selling price, find the equivalent markup percent on cost.
A. 28.5% B. 47.3% C. 66.1% D. 550%