Solve the problem. Give the answer as a simplified radical expression.A rectangular coal bin has a length of 
feet and a width of 
feet. What is its perimeter?
A. 8
feet
B. 16
feet
C. 16
feet
D. 8
feet
Answer: B
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Solve.
= 
A. 6j B. 6, 3 C. 6 D. 6, 3j
Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = x2 - 3, [0, 8], right-hand endpoint
A. 
B. 
C. 
D. 
Evaluate the expression. 
A. 79,833,600
B. 
C. 220
D. 1320
Use a system of linear equations to solve the problem.Two cars leave a city and head in the same direction. After 3 hours, the faster car is 21 miles ahead of the slower car. The slower car has traveled 132 miles. Find the speeds of the two cars.
A. 46 mph and 53 mph B. 70 mph and 77 mph C. 37 mph and 44 mph D. 44 mph and 51 mph