Write an equation that expresses the relationship. Use k as the constant of variation.x varies jointly as b and the sum of p and t.
A. x = 
B. x = k(bp + t)
C. x = kb + p + t
D. x = kb(p + t)
Answer: D
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Provide an appropriate response.
If C(x) = 8x + 1,000 and A(x) = 
, then if x = 200, A(x) =
A. 10 B. 12 C. 11 D. 13
Solve the problem.Lauren earns $3 an hour selling encyclopedias door-to-door. She also earns $22 in commission per set of encyclopedias sold. To pay her rent this week, she must earn at least $112, and she only has time to work 8 hours. How many sets of encyclopedias must Lauren sell this week in order to make her rent?
A. She would have to sell at least 3 sets of encyclopedias. B. She would have to sell at least 5 sets of encyclopedias. C. She would have to sell at least 4 sets of encyclopedias. D. She would have to sell at least 6 sets of encyclopedias.
Complete.6
ft = 
in.
A. 
B. 63
C. 75
D. 
Solve the problem.The function r(x) = 95x describes a company's monthly revenue and 
describes the monthly costs where x represents the number of units produced and then sold. Find the function, p(x), that describes the net profit or loss.
A. p(x) = 65x + 285,000 B. p(x) = 65x - 285,000 C. p(x) = -65x - 285,000 D. p(x) = 285,000 - 65x