Simplify.78 - 3 ? 10 + 28
A. 76
B. 2850
C. 778
D. 113
Answer: A
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Find the slope of the polar curve at the indicated point.r = 6, ? = 
A. 1
B. - 
C. -1
D. -
Find the expected value.A contractor is considering a sale that promises a profit of $23,000 with a probability of .7 or a loss (due to bad weather, strikes, and such) of $12,000 with a probability of .3. What is the expected profit?
A. $24,500 B. $11,000 C. $16,100 D. $12,500
For the given f(x), state the initial value C, the growth or decay factor a, and percent change R for each unit increase in x.f(x) = 8.6(0.89)x
A. C = 7.654; a = 0.89; R = -11% B. C = 8.6; a = 0.89; R = -11% C. C = 8.6; a = 1.89; R = 189% D. C = 7.654; a = 1.89; R = 11%
Answer the given question.Where are all points whose x-coordinates are -5?
A. On a line parallel to the x-axis, 5 units below. B. On a line parallel to the y-axis, 5 units to the left. C. On a line parallel to the x-axis, 5 units above. D. On a line parallel to the y-axis, 5 units to the right.