Solve the problem.A rectangular plot of land has a length of 
yards and a width of
yards. Find the perimeter of the plot of land.
A. (114
+ 30
) yd
B. 142
yd
C. (142 + 
) yd
D. (56
+ 30
) yd
Answer: A
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The graphs show the position s, velocity v = ds/dt, and acceleration a = d2s/dt2 of a body moving along a coordinate line as functions of time t. Which graph is which?
A. C = position, A = velocity, B = acceleration B. A = position, B = velocity, C = acceleration C. A = position, C = velocity, B = acceleration D. B = position, A = velocity, C = acceleration
Find the least common multiple.20, 44
A. 220 B. 44 C. 64 D. 880
Multiply. Assume that all variables represent nonnegative real numbers.(
+ 
)2
A. 9x + 
+ y
B. 9x + 2
+ y
C. 81x2 + 
+ y2
D. 81x2 + 2
+ y2
Solve the problem.Jackie's sisters weigh 117 lb, 142 lb, 121 lb, and 126 lb. The average female in her city weighs 136.2 lb. How much does Jackie weigh if she and her sisters have an average weight of 136.2 lb?
A. 126.5 lb B. 126 lb C. 175 lb D. 128.4 lb