Solve the problem.Greg is opening a car wash. He estimates his cost equation as 
and his revenue equation as 
where x is the number of cars washed in a six-month period. Find the number of cars that must be washed in a six-month period for Greg to make a profit.
A. At least 3826 cars
B. At least 38,252 cars
C. At least 2826 cars
D. At least 383 cars
Answer: A
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Determine from the graph whether the function has any absolute extreme values on the interval [a, b].
A. No absolute extrema.
B. Absolute minimum and absolute maximum.
C.
| Absolute minimum only. |
D. Absolute maximum only.
Solve graphically. Round solutions to the nearest tenth.6m2 + 10m + 1 = 0
A. -0.1, -1.6 B. 0.1, -1.8 C. -0.1, -0.8 D. -0.9, -2.4
Find the center and radius and draw the graph.(x - 4)2 + (y + 5)2 = 16
A. 
center (-4, 5); radius 4
B. 
center (-4, -5); radius 4
C. 
center (4, 5); radius 4
D. 
center (4, -5); radius 4
The double-line graph shows temperature highs and lows for a week. 
What day was the temperature the lowest? What was this low temperature?
A. Friday; 69°F B. Thursday; 70°F C. Friday; 72°F D. Saturday; 70°F