Solve.A rectangular box with volume 243 cubic feet is built with a square base and top. The cost is $1.50 per square foot for the top and the bottom and $2.00 per square foot for the sides. Let x represent the length of a side of the base. Express the cost the box as a function of x. Give the function and state its domain.
A. C = 4x + 
: x > 0
B. C = 3x2 + 
: x > 0
C. C = 3x2 + 
: x > 4
D. C = 2x2 + 
: x < 10
Answer: B
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A. ? 60 m B. ? 230 m C. ? 290 m D. ? 185 m
Answer the question.How many students must be in a room to be sure that at least three students are the same sex?
A. 5 students B. 6 students C. 4 students D. 7 students
Provide an appropriate response.Multiply two fractions by 
the numerators and 
the denominators.
A. multiplying; canceling B. adding; multiplying C. multiplying; multiplying D. multiplying; adding
Refer to this figure to answer the question. Assume 
and 
are parallel.
Are ?CDA and ?DHI supplementary?
A. No B. Yes