Simplify.5(6r2 - 9r - 3) - 2(4r2 + 3r + 6)
A. 22r2 - 51r - 27
B. 38r2 - 51r + 27
C. 22r2 + 39r + 27
D. -22r2 + 39r - 27
Answer: A
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We have $944.00 to spend on gravel for a drive. Fine gravel costs $26.00 per ton, while coarse gravel costs $16.00 per ton. We need a total of 42.00 tons of gravel. A: Using F fine gravel and C for coarse gravel, both in tons, write a system of two equations that determine the amount of each to be purchased. Round your answers to two decimal places, if necessary.B: How much of each type of gravel was purchased? Round your answers to two decimal places, if necessary.
What will be an ideal response?
Provide an appropriate response.What are the domain and range for the equation y = 2x?
A. Domain: (0, ?); range: (-?, ?) B. Domain: (-?, ?); range: (0, ?) C. (-?, ?); range: [0, ?) D. Domain: (-?, ?); range: (-?, ?)
Solve the problem.The following polynomial approximates the rabbit population in a particular area, 
where x is the number of years from 1995. Use a graphing calculator to describe the rabbit population from the years 1995 to 2010.
A. The population remains stable. B. The population increases. C. The population decreases.
Solve the system of equations by substitution.
A. x = 5, y = -4; (5, -4) B. x = -4, y = 5; (-4, 5) C. x = -4, y = -5; (-4, -5) D. x = -5, y = 0; (-4, 0)