A set of data items is normally distributed with a mean of 500. Find the data item in this distribution that corresponds to the given z-score.z = 1.5, if the standard deviation is 10.
A. 550
B. 505
C. 510
D. 515
Answer: D
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Consider a function 
. When f is not changing, what can be said about 
?
?
A. is positive.
B. is negative.
C. is zero.
D. is increasing.
For the pair of similar triangles, find the length of the indicated side.
In the outer triangle, the shortest side has length 9, and the middle side has length 12. In the inner triangle, the shortest side has length 3, the middle side has length 4, and the longest side has length 5. Find the length, x, of the longest side of the outer triangle.
A. x = 16 B. x = 20 C. x = 5 D. x = 15
Solve.Natasha rides her bike (at a constant speed) for 6 hours, helped by a wind of 2 miles per hour. Pedaling at the same rate, the trip back against the wind takes 10 hours. Find find the total round trip distance she traveled.
A. 30 miles B. 120 miles C. 60 miles D. 16 miles
Add the numbers using the number line.-1 + 0 
A. -10 B. 1 C. 0 D. -1