Answer:
38
Step-by-step explanation:
38/2 = 19
33/3 = 11
8/1 = 8
19+11+8 = 38
If there are 8 rows, there would have to be 6 in each row to make 48 (8x6=48).
If there had to be 6 white tiles in each of the 8 rows, than 6 out of 6 tiles would be white.
Therefore there would be 0 purple tiles.
Answer:yes
Step-by-step explanation:
The function is

, and according to the description of the function in the problem statement, we have the following:
at t=0 after being thrown (that is, at initial time), the height of the ball is calculated by h(0) as follows:

(ft), which is the initial height, as expected.
At t=1 (sec), the height would be

.
etc.
The path is parabolic, as we know by seeing that the function is a quadratic polynomial function. This function has been given in factored form as well. From that we can see that the zeros of the function are t=7 and t=-2.
This means that at t=7 sec, the height h is 0, which means that the ball has hit the ground. t=-2 has no significance in the context of our problem so we just neglect it.
Answer: B) 7 sec