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 normally distributed.Find the percent of times that are between 17 and 17.9 seconds.
A. 16%
B. 2%
C. .5%
D. 13.5%
Answer: B
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Integrate the function.
A. 0.512 B. 0.358 C. -0.035 D. -0.651
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
A. 
B. 
C. 
D. 
Solve the problem.An element decays at the rate of S(t) = se-0.071t, where t is time in years and s is the initial size in grams. If you have a 42-gram piece of this element, how many grams will you have 3 years from now? Round your answer to the nearest tenth of a gram.
A. 52.0 g B. 0.8 g C. 33.9 g D. 19.6 g
Solve the problem.Linda invests src="https://sciemce.com/media/4/ppg__10625191617__f1q205g6.jpg" alt="" style="vertical-align: -4.0px;" /> and 
for one year. Part is invested at 
, another part at 
, and the rest at 
. The total income from all 3 investments is 
. The combined income from the 
investments is the same as the income from the 
investment. Find the amount invested at each rate.
A. $5000 at 5%; $10,000 at 6%; $10,000 at 8%
B. $8000 at 5%; $10,000 at 6%; $7000 at 8%
C. $10,000 at 5%; $5000 at 6%; $10,000 at 8%
D. $10,000 at 5%; $10,000 at 6%; $5000 at 8%