Multiply. Write the answer in lowest terms.
? 
A. 
B. 
C. 
D. 
Answer: A
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Calculate the direction of 
and the midpoint of line segment P1P2.P1(4, 2, 2) and P2(14, 12, 7)
A. 
i + 
j + 
k; 
B. 
i + 
j + 
k; 
C. 
i + 
j + 
k; 
D. 
i + 
j + 
k; 
Solve the problem.Robin is having her yard landscaped. She obtained an estimate from two landscaping companies. Company A gave an estimate of $210 for materials and equipment rental plus $60 per hour for labor. Company B gave and estimate of $270 for materials and equipment rental plus $45 per hour for labor. Create a cost equation for each company where y is the total cost of the landscaping and x is the number of hours of labor. Determine how many hours of labor will be required for the two companies to cost the same.
A. 8 hr B. 3 hr C. 7 hr D. 4 hr
Decide whether the figure shown is a polyhedron.
A. Not a polyhedron B. Polyhedron
Determine if the statement is a proportion.I. 
II. 
A. I is a proportion, II is not a proportion. B. I is not a proportion, II is a proportion. C. I and II are both proportions. D. Neither I nor II are proportions.