The following circle graph displays Chris and Mary Smith's monthly $2900 family budget. Use the circle graph to answer the question. 
What is the ratio of money spent on rent to the total amount of the monthly budget?
A. 
B. 
C. 
D. 
Answer: A
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Provide an appropriate response.Write the fourth root of 81 using radical notation.
What will be an ideal response?
Determine whether a linear model, a quadratic model, or neither type of model would be reasonable for modeling the data depicted by the scattergram.
A. Linear B. Quadratic C. Neither
Find the slope of the line through the points and interpret the slope. 
A. - 
; for every 7-unit increase in x, y will decrease by 1 unit
B. -7; for every 1-unit increase in x, y will decrease by 7 units
C. 
; for every 7-unit increase in x, y will increase by 1 unit
D. 7; for every 1-unit increase in x, y will increase by 7 units
Solve the problem.For the total-cost functionC(x) = 0.01x2 + 2.2x + 80,find ?C and C'(x) when x = 100 and ?x = 1.
A. ?C = $4.21; C'(100) = $4.20 B. ?C = $4.20; C'(100) = $4.20 C. ?C = $4.21; C'(100) = $2.22 D. ?C = $4.21; C'(100) = $3.20