Decide whether the statement is true or false.The graphs of x2 + y2 = r2 and x2 + y2 = s2 do not intersect if r is not equal to s.
A. True
B. False
Answer: A
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Graph.f(x) = -x2 + 2x - 7
A. 
B. 
C. 
D. 
Solve and graph the solutions.
? 1
A. 
B. 
C. 
D. 
If the number is negative, write it with a raised negative sign; if the number is positive, write it in two ways.The temperature was 89.2 degrees below zero.
A. 
degrees or 89.2 degrees
B. 
degrees
C. 
degrees
D. 89.2 degrees
An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula:
?
?
How many units are sold after spending $3,000? $__________ (Round your answer to the nearest unit)
?
How many units are sold after spending $38,000? $__________ (Round your answer to the nearest unit)
?
How much needs to be spent (to the nearest hundred dollars) to sell 4,000 units? $__________
What will be an ideal response?