Solve the problem.An object is propelled vertically upward from the top of a 240-foot building. The quadratic function 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. How many seconds does it take until the object finally hits the ground? Round to the nearest tenth of a second if necessary.
A. 2 seconds
B. 9.6 seconds
C. 4 seconds
D. 1.6 seconds
Answer: B
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Use a graphing utility to (a) plot the graphs of the given functions and (b) find the x-coordinates of the points of intersection of the curves. Then find an approximation of the area of the region bounded by the curves using the integration capabilities of the graphing utility. Round answers to two decimal places.
y = 2
, y = 5 – 
Solve the equation.log6(x + 2) = 3
A. {727} B. {731} C. {218} D. {214}
Consider the following measurement. 79.000 kg Find the precision, the greatest possible error, the relative error and the percent of error (to the nearest hundredth of a percent).
A. 0.001 kg; 0.0005 kg; 0.000006; 0.00% B. 0.0005 kg; 0.0005 kg; 0.000006; 0.01 % C. 0.001 kg; 0.001 kg; 0.000013; 0.00 % D. 0.0005 kg; 0.0005 kg; 0.000013; 0.00 % E. 0.002kg; 0.001 kg; 0.000013; 0.00 %
Use a computer or graphing calculator to find the limit. Begin by plotting the function in an appropriate window.
A. 
B. ?
C. 0
D. 