Solve the problem.It costs $400 to start up a business of selling hot dogs. Each hot dog costs 
to produce. Find the cost function C(x) = mx + b whose input is the number of hot dogs and whose output is the total cost.
A. C(x) = 55x + 400
B. C(x) = 400x + 0.55
C. C(x) = 0.55x + 400
D. C(x) = 0.55x - 400
Answer: C
Mathematics
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Use the graph to answer the question.
Mike decides to buy shares of companies X and Y, which were initially selling for the same price. The changes in each stock's value over 90 days are shown in the graph above. When did the two stocks have the same value, other than when he bought them?
A. day 90 B. day 80 C. day 85 D. day 50
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Convert the numeral to Hindu-Arabic form.
A. 34,213 B. 31,333 C. 34,233 D. 34,460
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Choose the best estimate from the list.29
+ 21
is approximately 50, 50
, 50
, 50
.
A. 50
B. 50
C. 50
D. 50
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Use the definition of inverses to determine whether f and g are inverses.f(x) = 
, x ? -5; g(x) = x2 + 5
A. No B. Yes
Mathematics