Evaluate the expression for the given value of the variable or variables.5x2 + 28x; x = 
A. 9
B. 
C. 12
D. 6
Answer: C
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Provide an appropriate response.Find the area of a rectangle that has sides of 30 and 18 inches. Use the formula A = lw.
What will be an ideal response?
Solve the problem.A satellite dish is in the shape of a parabolic surface. Signals coming from a satellite strike the surface of the dish and are reflected to the focus, where the receiver is located. The satellite dish shown has a diameter of 14 feet and a depth of 3 feet. The parabola is positioned in a rectangular coordinate system with its vertex at the origin. Write an equation in the form of 
for the parabola used to shape the dish. 
A. y = 
x2
B. y = 
x2
C. y = 
x2
D. y = 
x2
Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.
A. 7
B. 7
C. 8
D. 7
Solve the problem. Round your answer to the nearest tenth.A wagon is pulled horizontally by exerting a force of 60 pounds on the handle at an angle of 25° to the horizontal. How much work is done in moving the wagon 50 feet?" .
A. 1267.9 ft-lb B. 2110.8 ft-lb C. 1617.4 ft-lb D. 2718.9 ft-lb