The experiment described suffers from at least one flaw in design. Identify the flaw and tell how the experiment can be improved.A company tests its new running shoes with 100 mid-distance runners. Each athlete runs the 1600 meters using their usual running shoes and then again a few hours later using the new shoes. The times using the new shoes are compared with the times using their usual shoes.
What will be an ideal response?
Fatigue may be a factor when they run the second time. It will be impossible to tell whether any differences in the times are due to differences in shoes or to different energy levels. They could collect data on different days or randomly choose half the athletes to use the new shoes first.
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Evaluate or simplify the given expression.sin(2 sin-1 x)
A. x
B. 2x
C. 2x - 2x3
D. 2x
Graph the parametric equation for the given interval. Add arrows to show how the curve is traced out. x = et, y = t + 1; -2 ? t ? 2
A. 
B. 
C. 
D. 
Solve the problem.A family is driving from Algebraville to Geometry City to Trig Town. With reference to the origin, Algebraville is located at 
, Geometry City at 
, and Trig Town at 
, all numbers being in 1000-mile units. Find the distance from Algebraville directly to Trig Town. If necessary, round your answer to the nearest whole number.
A. 20,616 mi B. 19,026 mi C. 8062 mi D. 19 mi
In the following table, Y1 is defined by a rational expression of the form 
. Use the table to find the values of p and q.
A. p = 1; q = 0 B. p = 1; q = -2 C. p = 0; q = 1 D. p = -2; q = 1