Solve the problem.If a ball is thrown upward from the ground with an initial velocity of 128 feet per second, its height after t seconds is given by the function h(t) = -16t2 + 128t. Find the number of seconds before the ball lands on the ground.
A. 112 seconds
B. 64 seconds
C. 4 seconds
D. 8 seconds
Answer: D
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Solve.The sum of a number and 81 times its reciprocal is -18. Find the number.
A. 72 B. -9 C. 9 D. -90
Solve the problem. Assume that simple interest is being calculated in each case. Round the answer to the nearest cent unless otherwise indicated.Allan borrowed $4200 from his father to buy a car. He repaid him after 8 months with interest of 6% per year. Find the total amount he repaid.
A. $4347.00 B. $4452.00 C. $168.00 D. $4368.00
For the point-slope equation given, state the slope and the point on the graph used in creating the equation.y + 4 = 9x
A. m = 9; (0, -4) B. m = -9; (-4, 0) C. m = 9; (-4, 0) D. m = 9; (0, 4)
Evaluate the expression for the given replacement value.
, for x = 357
A. 1 B. undefined C. 0 D. 357