Use the position equation 
, where s represents the height of an object (in feet), 
represents the initial velocity of the object (in feet per second), ![]()
src="https://sciemce.com/media/3/ppg__cognero__Section_2.7_Nonlinear_Inequalities__media__fe6b72b7-64cf-48a6-8c26-cdc1752597e0.PNG" style="vertical-align:middle;" /> represents the initial height of the object (in feet), and t represents the time (in seconds).
A projectile is fired straight upward from ground level 
with an initial velocity of 160 feet per second. At what instant will it be back at ground level?
?
A. 
Sec
B. 
Sec
C. 
Sec
D. 
Sec
E. 
Sec
Answer: B
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Evaluate the expression.71
A. 7
B. 1
C. -7
D. 
Identify the form of the integral as inverse sine, inverse tangent, logarithmic, or general power.
A. Inverse sine B. Logarithmic C. Inverse tangent D. General power
Multiply.7(-1)(5)(-10)
A. -350 B. 57 C. 12 D. 350
Given the values of x and y, find an equation of variation in which y varies directly as x.y = 2.1, when x = 1.2
A. y = 
B. y = 2.1x
C. y = 1.75x
D. y = 
x