Solve the inequality.x3 + 3x2 - 28x > 0
A. (-?,-7) or (0, 4)
B. (-7, 0) or (4, ?)
C. (-7, ?)
D. (-4, 0) or (7, ?)
Answer: B
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Provide an appropriate response.Use a calculator to find cos 2.31 rounded to the nearest ten-thousandth.
A. -1.4843 B. 0.9992 C. 1.0008 D. -0.6737
Solve.A couple have bought a new house and are comparing quotes from two moving companies for moving their furniture. Company A charges $120 for the truck and $50 per hour for the movers. Company B charges $110 for the truck and $65 per hour for the movers. Create a cost equation for each company where y is the total cost and x is the number of hours of labor. Write a system of equations.
A. 50y = 120x 65y = 110x B. 50y = x + 120 65y = x + 110 C. y = 120x + 50 y = 110x + 65 D. y = 50x + 120 y = 65x + 110
Find all rational, irrational, and complex zeros (and state their multiplicities). P(x) = x³ -8
What will be an ideal response?
Solve the problem.Mardi received an inheritance of 
. She invested part at 9% and deposited the remainder in tax-free bonds at 8%. Her total annual income from the investments was 
. Find the amount invested at 9%.
A. $30,000 B. $63,800 C. $60,000 D. $59,000