Find the value of the expression using the given values.
?x = -8, y = 7
A. 1
B. 15
C. -15
D. -1
Answer: B
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Perform the indicated operations. Write the result using a radical. Assume that all variables represent positive values.
? 
A. 
B. 
C. 
D. 
Solve the problem.Boris is planning a border for his triangular-shaped garden. One side of the garden is 13.2 feet long, another side is 19.0 feet long, and the third side is 27.6 feet long. Find the amount of border material needed.
A. 59.9 feet B. 59.8 feet C. 60.8 feet D. 58.8 feet
Solve the problem.Sybil is having her yard landscaped. She obtained an estimate from two landscaping companies. Company A gave an estimate of $180 for materials and equipment rental plus $60 per hour for labor. Company B gave an estimate of $230 for materials and equipment rental plus $50 per hour for labor. We can represent this situation with the system of linear equationsc = 180 + 60xCompany Ac = 230 + 50xCompany Bwhere c is the total cost and x is the number of hours of labor. Graph the system. What is the x-coordinate of the intersection point of the graphs? Describe what this x-coordinate means in practical terms.
A. 5; for 5 hours of labor, both companies charge the same. B. 8; for 8 hours of labor, both companies charge the same. C. 4; for 4 hours of labor, both companies charge the same. D. 4; there is a number of hours of labor, for which both companies charge $400.
Find the GCF for the list.48, 84
A. 3 B. 2 C. 1 D. 12