Estimate by rounding as directed.49.713 + 0.582 + 79.99; nearest tenth
A. 130.1
B. 129.4
C. 130.3
D. 130.6
Answer: C
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You sell calculators, and the price you charge for each calculator depends on the number purchased. If a customer orders C calculators, then you charge 
dollars for each calculator.
?
A: Write a formula that gives your income I, in dollars, if you sell C calculators.B. What is your income if you sell 8 calculators?C: What number of calculators sold will provide you with the most income?
What will be an ideal response?
Evaluate the integral. 
A. 9 sin-1
- x
+ C
B. 
- 3 ln
+ C
C. -3sin-1
- x2
+ C
D. 9 sin-1
- 
+ C
Find the product using the FOIL method.(x + 9y)(-4x - 6y)
A. x2 - 42xy - 54y2 B. -4x2 - 42xy - 42y2 C. x2 - 42xy - 42y2 D. -4x2 - 42xy - 54y2
Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form.(0, -9); m = 5
A. y = 5x + 9 B. y = 5x - 9 C. y = -5x - 7 D. y = 5x + 11