Multiply.-3(-4x - 2)
A. -4x + 6
B. 12x + 6
C. 12x - 2
D. 18x
Answer: B
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Solve the problem.The sum of a number and 8 times its reciprocal is 6. Find the number.
A. 4 B. 2 C. 5 D. 2 or 4
Add.-19 + (-12) + (-5) + (-7) + 20 + (-5)
A. -68 B. 20 C. -6 D. -28
Solve the problem.A coin is tossed upward from a balcony 228 ft high with an initial velocity of 32 ft/sec. During what interval of time will the coin be at a height of at least 100 ft? (h = -16t2 + v0t + h0.)
A. 4 ? t ? 8 B. 3 ? t ? 4 C. 0 ? t ? 1 D. 0 ? t ? 4
Solve the problem.Helen Weller invested $13,000 in an account that pays 11% simple interest. How much additional money must be invested in an account that pays 14% simple interest so that the total interest is equal to the interest on the two investments at the rate of 12%?
A. $6500 B. $10,000 C. $13,000 D. $9000