Solve.4x3 - 8x2 = 12x
A. x = 0, 1, -3
B. x = -1, 3
C. x = 1, -3
D. x = -1, 0, 3
Answer: D
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A company installs 5,000 light bulbs. The lifetimes of the lightbulbs are approximately normally distributed with a mean of 500 hours and a standard deviation of 100 hours. Find the approximate number of bulbs that can be expected to last the indicated amount of time.Between 290 hours and 500 hours
A. 2,410 B. 2,913 C. 2,413 D. 2,911
Write a linear inequality that describes the shaded region.y = -2
A. x ? -2 B. x ? -2 C. y ? -2 D. y ? -2
Solve the problem.A company manufactures two products. For $1.00 worth of product A, the company spends $0.40 on materials, $0.25 on labor, and $0.10 on overhead. For $1.00 worth of product B, the company spends $0.50 on materials, $0.20 on labor, and $0.10 on overhead. Let a = 
and b = 
.Then a and b represent the "costs per dollar of income" for the two products.Evaluate 100a + 400b and give an economic interpretation of the result.
What will be an ideal response?
Solve the system of equations using the addition method. 7x + 4y = -1-7x - 10y = 13
A. (-7, -2) B. (1, -2) C. (-1, 2) D. (7, 2)