Solve the problem.John owns a hotdog stand. He has found that his profit is represented by the equation 
with P being profits and x the number of hotdogs. How many hotdogs must he sell to earn the most profit?
A. 23 hotdogs
B. 46 hotdogs
C. 28 hotdogs
D. 29 hotdogs
Answer: C
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Solve the problem.The blade of a windshield wiper sweeps out an angle of 135° in one cycle. The base of the blade is 12 inches from the pivot point and the tip is 32 inches from the pivot point. What area does the wiper cover in one cycle? (Round to the nearest 0.1 square inch.)
A. 1041.8 in2 B. 1036.7 in2 C. 1105.3 in2 D. 948.3 in2
Determine the number by which both sides of the equation must be multiplied or divided, as specified, to obtain just x on the left side.
x = -1; multiplied
A. 6
B. 
C. -1
D. - 
Find the average of the numbers.What is the average of all the even integers between -10 and 12, inclusive of both?
A. 2 B. 1 C. 12 D. -22
Solve.Punky went to dinner. Her bill was $15.55, and she left a 20% tip. How much was the tip, rounded to the nearest dollar?
A. $31 B. $19 C. $6 D. $3