Solve the problem.Consider the quadratic model h(t) = -16t2 + 40t + 50 for the height (in feet), h, of an object t seconds after the object has been projected straight up into the air. Find the maximum height attained by the object. How much time does it take to fall back to the ground? Assume that it takes the same time for going up and coming down.
A. maximum height = 50 ft; time to reach ground = 2.5 seconds
B. maximum height = 75 ft; time to reach ground = 2.5 seconds
C. maximum height = 75 ft; time to reach ground = 1.25 seconds
D. maximum height = 50 ft; time to reach ground = 1.25 seconds
Answer: B
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Find the system of equations that is equivalent to the matrix equation, 
= 
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A. 
B. 
C. 
D. 
Find the value of y that corresponds to x = -4 in the graph of the equation 2x + 3y = 13. ?
A. 9 B. -7 C. -9 D. 21 E. 7
Find the x-intercept and the y-intercept of the graph of the equation. Do not graph the equation.4x + 3y = 0
A. x-intercept = 4; y-intercept = 3 B. x-intercept = -3; y-intercept = -4 C. x-intercept = 3; y-intercept = 4 D. x-intercept = 0; y-intercept = 0
Find the additive inverse or opposite.|-25|
A. 0
B. 25
C. - 
D. -25