Evaluate the expression.(-3)2
A. 9
B. 6
C. -9
D. -6
Answer: A
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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 4 sin t - cos tFind the body's velocity at time t = ?/4 sec.
A. - 
m/sec
B. 
m/sec
C. - 
m/sec
D. 
m/sec
A container contains a large unspecified number of ping-pong balls. A student takes 80 balls from the container, marks them with a blue dot, returns the marked balls to the container, and thoroughly mixes the balls. She then takes 80 balls again from the container. Of these, 16 have blue dots. She now wants to use this data to estimate the total number of ping-pong balls in the container.An estimate for the number of ping-pong balls in the container is
A. 400. B. 480. C. 160. D. 576. E. none of these
Determine whether the ordered pair is a solution to the inequality.2x - 4y ? 1; (-3, 2)
A. Yes B. No
Perform the operations and simplify.
?
?
Assume that no denominators are 0.
?
A. ?
B. ?
C. 
D. ?