Solve the problem.If an object is propelled upward from a height of 96 feet at an initial velocity of 64 feet per second, then its height after t seconds is given by the equation 
, where h is in feet. After how many seconds will the object reach a height of 160 feet?
A. 2 sec
B. 4 sec
C. 8 sec
D. 1 sec
Answer: A
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Solve the problem.Suppose 
is a mathematical model for actual time as a function of estimated time, where f(x) represents actual time and x represents estimated time and m and b are constants. If 
and b = -0.3, find f(x) when x is 120 min.
A. 95.7 min B. 120.24 min C. 119.76 min D. 96.3 min
Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.1.2x + 1.3y - 5.0z = 2.25.9x - 1.6y + 1.8z = -2.84.3x + 2.2y + 1.9z = 11.1
A. (1.4, 15.2, 2.5) B. (0.7, 7.6, 1.3) C. (1.8, 19.0, 3.2) D. (0.4, 3.8, 0.6)
Solve.A study of grocery buying habits in a particular region stated that for the years 
, the annual number of new family-run grocery stores can be estimated by the equation 
where x is the number of years after 2000. Graph this equation and use the graph to predict the number of family-run stores that will start up in 2007.
A. 2236 stores
B. 1792 stores
C. 1292 stores
D. 992 stores
Graph the linear equation.x + y = -3
A. 
B. 
C. 
D. 