Provide an appropriate response.The height of an object after t seconds is given by the equation h = -16t2 + 7t + 2. When 
, solving for t means finding the time when the object hits the ground. A student uses the quadratic formula and finds 2 solutions. One is negative and the other positive. Which solution makes sense? Which does not? Why?
What will be an ideal response?
The positive solution makes sense and the negative solution does not. The model represents time after the object is launched, and negative time does not make sense in this context.
You might also like to view...
Solve.To estimate the number of board feet of one-inch sheathing needed for a section of a roof, add 15% to the area (in square feet) of the roof. If a section of roof has an area of 2500 sq ft, how many board feet of such sheathing will be needed?
A. 2832 bf B. 2875 bf C. 2965 bf D. 2748 bf
Find the divergence of the field F.F = -20xz4i + 7yj + 4z5k
A. 7 B. -40z4 + 7 C. -20z4 + 7 D. -40z4
Write the following as an algebraic expression in u, u > 0.sin 
A. 
B. u
C. 
D. 
Write an equation for a function that has a graph with the given characteristics.The shape of y = 
is shifted 10 units to the left. Then the graph is shifted 7 units upward.
A. f(x) = 
+ 10
B. f(x) = 
+ 7
C. f(x) = 7
D. f(x) = 
+ 7