Solve the problem.An elementary school has 17 classrooms, each of which can take 30 children. How many children can the school accept for admission?
A. 510
B. 527
C. 520
D. 540
Answer: A
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Solve the problem.The square root expression Rf
gives the aging rate of an astronaut relative to the aging rate of a friend on Earth, Rf, where v is the astronaut's speed and c is the speed of light. An astronaut is moving at 70% of the speed of light. Substitute 0.7c in the expression above. If 10 weeks have passed for his friend, how long, to the nearest week, was he gone?
A. 5 weeks B. 1 weeks C. 12 weeks D. 7 weeks
Use NDER on a calculator to find the numerical derivative of the function at the specified point.f(x) = -4x2 + 7x at x = 5
A. -13 B. 33 C. -33 D. 3
Evaluate the function at the given value of the independent variable and simplify.h(x) = 
;h(8)
A. 10 B. 6 C. -6 D. -10
Add mentally.41 + 0 + 92 + 0 + 2 + 68 + 21
A. 242 B. 224 C. 234 D. 247