Write the sentence as a proportion.30 miles is to 21 minutes as 45 miles is to 31.5 minutes
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: B
Mathematics
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Find the average velocity of an object which follows the position function s(t) over the given interval.s(t) = t2 + 2t, [2, 7]
A. 9
B. 
C. 11
D. 
Mathematics
There are 3 solutions of 
. Find all three solutions. Round your answers to two decimal places if necessary.
?
A. 3.14, 2.72, -3.14 B. 0, 3.24, -1.24 C. 0, 4, -1.72 D. 0, 1, -1
Mathematics
Solve the inequality. Write the solution set in interval notation.|x + 1| < 2
A. ? B. (-3, 1) C. (-3, -1) D. (-?, -3) ? (1, ?)
Mathematics
Write the complex conjugate.-15i
A. 15i B. 15 C. -15 D. -15i
Mathematics