Decide whether the slope is positive, negative, zero, or undefined.
A. Undefined
B. Positive
C. Negative
D. Zero
Answer: D
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Solve the problem.In 1985, John invested $22,000 in the stock market. By 1995 his investment had grown to $26,000. If the market continues to grow at the same rate, how much will be in his account in 1996? Give your answer to the nearest dollar.
A. $22,401 B. $30,000 C. $26,400 D. $26,000
Factor the square of the binomial.x2 + 18xy + 81y2
A. (x - 9y)2 B. (x + 9y)2 C. (x + 9y)(x - 9y) D. (x + 18y)(x - 18y)
Find a system of inequalities with the given graph.
A. y ? -x + 7 y ? 0 x ? 0 x ? 3 B. y ? -x + 7 y ? 0 x ? 0 x ? 3 C. y ? -x + 3 y ? 0 x ? 0 x ? 7 D. y ? -x + 7 x ? 3
Solve the problem.Under ideal conditions, a bacteria population satisfies the difference equation 
, 
, where yn is the population, in millions, after n hours. Sketch a graph that shows the growth of the population.
A. 
B. 
C. 
D. 