Simplify the expression by using the order of operations.
A. 21
B. 36
C. 20
D. 18
Answer: D
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Find the quotient.-340.71 ÷ 0
A. -340.71
B. - 
C. 0
D. undefined
Solve the problem.The percent of concentration of a certain drug in the bloodstream 
after the drug is administered is given by K(x) = 
. At what time is the concentration a maximum?
A. 2.5 hr B. 7 hr C. 4.9 hr D. 4 hr
Set the viewing rectangle of your graphing calculator to 
by 
to solve the problem.Graph the following set of parametric equations for 0 ? t ? 2? and identify the letter of the alphabet that the graph resembles.x1 = 3 + 1.2 cos(0.5t),y1 = -2 - 1.5 sin(0.5t)x2 = 4.2,y2 = -2 + 1.5t/?
A. d B. J C. r D. b
Use an amortization table to solve the problem. Round to the nearest cent.You have purchased a new house and have a mortgage for $90,000 at 6% compounded monthly. The loan is amortized over 20 years in equal monthly payments of $644.79. Find the total amount paid in interest when the mortgage is paid off.
Fill in the blank(s) with the appropriate word(s).