At one high school, the mean time for running the 100-yard dash is 
with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:Between 14.3 and 16.1 seconds
A. 34%
B. 47.5%
C. 50%
D. 68%
Answer: D
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The weight of an adult blue whale is related to its length by the formula
,
where L is the length, in feet, and W is the weight, in tons.A: Find a formula that expresses L as a function of W.B: How long would the whale need to be to weigh 94 tons?C: A blue whale is spotted, and its length is estimated to be 82 feet. Use this length to find the whale's weight.
What will be an ideal response?
Solve the problem.On the November 6 billing date, Terry had a balance due of $455.76 on his credit card. The transactions during the following month were: 
The interest rate on the card is 1.6% per month. Using the average daily balance method, find the balance due on December 6 (November has 30 days).
A. $465.73 B. $396.90 C. $711.51 D. $711.47
Find an equation of variation in which the following are true.y varies directly as x and inversely as z, and y = 12 when x = 2 and z = 8.
A. y = 
B. y = 51xz
C. y = 
D. y = 
Identify the complex number as real or imaginary.i
A. Imaginary B. Real