Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = 3x2 - 30x + 78
A. minimum at (5, 0)
B. maximum at (3, 0)
C. maximum at (3, 5)
D. minimum at (5, 3)
Answer: D
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Solve the problem.The 8 ft wall shown here stands 27 feet from the building. Find the length of the shortest straight beam that will reach to the side of the building from the ground outside the wall.
A. 35 ft B. 47.9 ft C. 46.9 ft D. 45.9 ft
Provide an appropriate response. Solve the system of equations using the addition method: 2x + 5y = 193x + y = 9
A.
(-2, 15)
B.
C.
(4, -3)
D.
(2, 3)
Solve the problem.You intend to put in a 4-foot wide concrete walkway along two adjacent sides of the lot of your house. The lot measures 27 by 38 feet. If you decide to place a narrow flower bed along the outside of the walkway, how many feet of flowers should you plan for?
A. 65 ft B. 73 ft C. 146 ft D. 69 ft
Solve the problem.Jack borrowed $340 from his brother. Jack's brother wants 6 monthly payments of 
to repay the loan. How much extra is Jack's brother charging for the loan?
A. $200 B. $540 C. $110 D. $640