Solve the problem.A satellite dish is shaped like a paraboloid of revolution. The signals that emanate from a satellite strike the surface of the dish and are reflected to a single point, where the receiver is located. If the dish is 8 feet across at its opening and is 2 feet deep at its center, at what position should the receiver be placed?
What will be an ideal response?
The receiver should be located 2 feet from the base of the dish, along its axis of symmetry.
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Perform the indicated operations.6[-7 + 7(-4 + 3)]
A. -4 B. -84 C. -0 D. -49
Solve for x: antilog -1 = x.
A. 0.1 B. -0.1 C. -1 D. 10
Add and simplify.
+ 
A. 
B. 
C. 
D. 2
Solve the problem.In his algebra class, Rob has scores of 79, 85, 81, and 65 on his first four tests. To get a grade of C, the average of the first five tests must be greater than or equal to 70 and less than 80. Solve an inequality to find the range of scores that Rob can earn on the fifth test to get a C.
A. 40 ? x < 90, where x represents Bob's score on the fifth test B. x ? 40, where x represents Bob's score on the fifth test C. 40 < x < 90, where x represents Bob's score on the fifth test D. 40 ? x ? 90, where x represents Bob's score on the fifth test