Solve the problem.The formula 
represents the number of households N, in thousands, in a certain city that have a computer x years after 1990. According to the formula, in what year were there 87 thousand households with computers in this city?
A. 1992
B. 1995
C. 1993
D. 1994
Answer: D
Mathematics
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Use ratios or conversion factors to convert the measures of time. Round to hundredths.2 days to minutes
A. 7,200 min B. 48 min C. 172,800 min D. 2,880 min
Mathematics
Simplify by combining like terms.-8x + (-6x)
A. -14x B. 14x C. 2x D. -2x
Mathematics
Solve the problem.If f varies jointly as q2 and h, and f = 24 when q = 2 and h = 2, find k.
A. k = 3 B. k = 2 C. k = 5 D. k = 135
Mathematics
Find the product.(9 - 5x)2
A. 81 + 25x2 B. 81x2 - 90x + 25 C. 81 - 90x - 25x2 D. 81 - 90x + 25x2
Mathematics