Solve the problem.A motorcycle and a car leave an intersection at the same time. The motorcycle heads north at an average speed of 20 miles per hour, while the car heads east at an average speed of 48 miles per hour. Find an expression for their distance apart in miles at the end of t hours.
A. 2t
miles
B. t
miles
C. 52
miles
D. 52t miles
Answer: D
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Find the indicated directed path.Find a directed path of length 4 from "F to D". 
A. "FECAD" B. "No such route exists." C. "FECD" D. "FBECD"
Find the extreme values of the function subject to the given constraint.
A. Maximum: 30 at 
minimum: 24 at 
B. Maximum: none; minimum: 24 at 
C. Maximum: none; minimum: 30 at 
D. Maximum: 51 at 
minimum: 30 at 
Write the expression in the standard form a + bi.7i(6 - 4i)
A. 28+ 42i B. 42i + 28i2 C. 42i - 28i2 D. 42i- 28
Determine which of the following methods is the best choice for solving the given equation: factoring, using the principle of square roots or using the quadratic formula. Then, solve the equation.(x + 5)2 = 15
A. Square root principle or factoring; 5 ± 
B. Square root principle; -5 ± 
C. Quadratic formula; ±
D. Factoring; 10