Solve.John owns a hotdog stand. He has found that his profit is represented by the function 
with P(x) being profits and x the number of hotdogs sold. How many hotdogs must he sell to earn the most profit?
A. 31 hotdogs
B. 47 hotdogs
C. 23 hotdogs
D. 30 hotdogs
Answer: D
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Multiply and simplify.13 ? 
A. 
B. 
C. 91
D. 
Solve the problem.Two phone companies compete for customers in a city. Company 1 retains 3/4 of its customers and loses 1/4 of its customers to Company 2. Company 2 retains 5/6 of its customers and loses 1/6 to Company 1. If we represent the fraction of the market held last year by 
, where a is the number the that Company 1 had last year and b is the number that Company 2 had last year, then the number that each company will have this year can be found by the following matrix equation. 
= 
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If Company 1 has A = 90,000 customers and Company 2 has B = 198,000 customers this year, how many customers did Company 1 have last year?
A. 216,000 customers
B. 72,000 customers
C. 76,000 customers
D. 222,000 customers
Decide if the statement is true or false.-
? -
A. True B. False
Write the decimal as a fraction or mixed number in lowest terms.0.512
A. 
B. 
C. 
D. 