Solve the problem.An object is propelled vertically upward from the top of a 160-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. 7.5 seconds
B. 0.6 seconds
C. 2 seconds
D. 15.6 seconds
Answer: D
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Solve the problem.A pendulum bob swings through an arc 40 inches long on its first swing. Each swing thereafter, it swings only 60% as far as on the previous swing. How far will it swing altogether before coming to a complete stop? Round to the nearest inch when necessary.
A. 100 in. B. 50 in. C. 67 in. D. 133 in.
Determine whether the following is a statement. If it is, then also classify the statement as true or false.This room is big.
A. True statement B. Not a statement C. False statement
Determine whether the two binomials are or are not opposites.x - 4 and 4 - x
A. Opposites B. Not opposites
Provide an appropriate response.Let P be a 5 × 5 matrix that has a multiplicative inverse. Which of the following statements are false? (Let 0 represent the 5 × 5 zero matrix.)(i) 0 ? P = 0(ii) PP-1 = 0(iii) P-1P = I5(iv) PP-1 = P
A. (iv) B. (ii), (iv) C. (i), (iii) D. (ii)