Multiply and simplify.
? 
A. 
B. 
C. 
D. 120xy
Answer: A
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Solve the problem.A power boat in still water maintains a speed of 20 miles per hour. The boat heads directly across a river perpendicular to the current which has a speed of 7 miles per hour. Find the actual speed and direction of the boat, rounded to the nearest whole number.
A. 20 miles per hour; 20° off course B. 21 miles per hour; 19° off course C. 12 miles per hour; 36° off course D. 11 miles per hour; 40° off course
Given matrices A and B, find the indicated matrix if possible.A = 
, B = 
Find AB.
A. 
B. AB is not defined.
C. 
D. 
Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.A company increased the number of its employees from 120 to 135. Find the percent increase.
A. 88.9% B. 12.5% C. 52.9% D. 11.1%
Suppose that money is deposited in a savings account at a steady rate of $150 per month. If the account pays 2.5% interest compounded continuously, how much will be in the account at the end of 3 years? Enter your answer in the form a(eb ± c) where b is a real number to three decimal places (no units).
What will be an ideal response?