Simplify.(53)5
A. 253
B. 2515
C. 58
D. 515
Answer: D
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Perform the operation and simplify, or solve the equation for the variable.
- 
+ 
A. 
B. 
C. 
D. 
Solve the given equation for the indicated variable.A = 
bh for h
A. h = 
B. h = 
C. h = 
D. h = 
Solve the problem.A satellite camera takes a rectangular-shaped picture. The smallest region that can be photographed is a 4-km by 6-km rectangle. As the camera zooms out, the length l and width w of the rectangle increase at a rate of 3 km/sec. How long does it take for the area A to be at least 4 times its original size?
A. 9.7 sec B. 4.94 sec C. 3.28 sec D. 1.61 sec
Find the indicated intersection or union.{3, 7, 14, 19, 21} ? {7, 19, 21, 27}
A. {3, 7, 19, 21} B. {7, 19, 21, 27} C. {7, 19, 21} D. {3, 7, 14, 19, 21, 27}