Find the margin of error for the survey results described. In a survey of 257 adults, 35% said that they had tried acupuncture at some point in their lives.Give your answer as a decimal to three decimal places.
A. 0.004
B. 0.062
C. 0.125
D. 0.031
Answer: B
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Solve the problem.A flare fired from the bottom of a gorge is visible only when the flare is above the rim. If it is fired with an initial velocity of 
and the gorge is 336 ft deep, during what interval can the flare be seen?(h = -16t2 + v0t + h0.)
A. 3 < t < 7 B. 0 < t < 3 C. 9 < t < 13 D. 6 < t < 10
Translate the problem to a system of equations; then solve using the elimination method.Ellen wishes to mix candy worth $2.80 per pound with candy worth $4.04 per pound to form 88 pounds of a mixture worth $3.41 per pound. How many pounds of the more expensive candy should she use? Round your answer to the nearest pound, if necessary.
A. 47 pounds B. 45 pounds C. 43 pounds D. 48 pounds
Find an equation of the tangent line to the graph of 
at the point 
.
?
A. 
B. 
C. 
D. 
E. 
Simplify the expression without using a calculator.-32
A. -1 B. -9 C. 9 D. -6