Simplify the expression. Write the answer using positive exponents.
A. 
B. - 
C. x8y8
D. - 
Answer: C
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Solve the problem.Bubba's Computer World sells personal computers. They want to try out a new advertising campaign with x one-minute spots on local television at a cost of $275 per minute, and y one-minute spots on radio, at a cost of $220 per minute. For the first phase of the campaign, the advertising director is given a budget of no more than $55,000 to spend on a maximum of 225 minutes of advertising. Graph the possible combinations of television and radio spots and find the vertices. 
A. 
B. 
C. 
D. 
Simplify by dividing.
A. 44 B. 0 C. -44 D. undefined
Solve the problem.An airplane travels 700 miles against the wind in 4 hours, and makes the return trip with the same wind in 1 hours. Find the speed of the wind.
A. 175 mph B. 262.5 mph C. 437.5 mph D. 700 mph
Solve the problem.During the last four months of a recent year, Annie's Natural Food Store reported the following sales.September$2598October$3236November$3407December$4107How much more were the sales in December than the sales in November?
A. $600 B. $7414 C. $7514 D. $700