Solve the problem.A ball is thrown vertically upward with an initial velocity of 96 feet per second. The distance in feet of the ball from the ground after t seconds is 
For what interval of time is the ball more than 80 above the ground?
A. {x ? 0.5 sec < x < 5.5 sec}
B. {x ? 2.5 sec < x < 3.5 sec}
C. {x ? 1 sec < x < 5 sec}
D. {x ? 4 sec < x < 8 sec}
Answer: C
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Solve the problem.The table below summarizes the construction cost of a set of homes (excluding the lot cost) along with the square footage of the home's floor space. Find a linear equation that relates the construction cost in thousands of dollars to the floor space in hundreds of square feet by finding the least squares line for the data.
A. y = 8.13x B. y = 7.87x - 13.08 C. y = 7.97x - 13.54 D. y = 8.13x - 12.79
Evaluate the integral.
A. - 
B. 
C. - 
D. 
Find the discount period.Loan made: Oct 30Length of loan: 240 daysDate of discount: Jan 20
A. 157 days B. 82 days C. 83 days D. 158 days
Solve the problem.Below is a table of data from a high school survey given to 500 parents. Find the probability that a randomly chosen parent would agree or strongly agree that the school is clean. Round to the nearest hundredth.
A. 0.38 B. 0.42 C. 0.37 D. 184