The scores on a driver's test are normally distributed with a mean of 100. Use this information to find the requested value.Find the score that is 2.5 standard deviations below the mean, if the standard deviation is 10.
A. 125
B. 80
C. 90
D. 75
Answer: D
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Find the area of the shaded part of the figure if a = 7, b = 10, c = 2.
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A. 21 B. 140 C. 42 D. 84 E. none of these
Factor.mn2 - 36m - 6n2 + 216
A. (m - 6)(n + 6)(n - 6) B. (mn + 6)(n - 6) C. (m - 6)(n - 6) D. (mn - 6)(n + 6m)(n + 6m)
Perform the addition visually using symbols.1 + (-2)
A. -1 B. -3 C. 1 D. 3
Solve the problem.John's favorite clothing store is having a close-out sale with everything reduced 60% off the original price. The discount is calculated at the cash register when the purchase is made. John buys a sweater originally priced $23.95, 2 pairs of jeans originally priced $16.99 each, and a jacket originally priced $57.98. Estimate the total cost of all items after the discount is taken.
A. $20.00 B. $720.00 C. $48.00 D. $72.00