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Given that a = (3, 2) and b = (15, 8) in the standard (x, y) coordinate plane, what is the distance from a to b?

(A)5 image

(B) 8

(C) 4 image

(D) 6 image

(E) 18

The Correct Answer

For all t > 0, f(t) = . Which of the following is true about f(t) ?

(A) It increases in proportion to t. (B) It increases in proportion to t2. (C) It decreases in proportion to t. (D) It decreases in proportion to t2. (E) It remains constant.

Correct Answer: E

In the standard (x,y) coordinate plane, point A is located at (w,w + 5) and point B is located at (4w,w-- 5). In coordinate units, what is the distance between A and B?

(A) (B) (C) 9w2 + 100 (D) (E) |w|

Correct Answer: B

If x = 3, then x2 + 2x - 12 = ?

(A)-3 (B) 0 (C) 3 (D) 6 (E) 21

Correct Answer: C

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