Since it takes less time in September than in June, this is a DECREASE. The percent decrease. The time is different by 114 seconds, divide this by the original time of 465 seconds and then convert to a percent, by multiplying by 100. You should get 114/465 = 0.245 then x 100 = 24.5% decrease.
Answer:

Step-by-step explanation:
The vertex form of an equation of a parabola:

- vertex
We have
vertex 

Therefore we have:

Substitute
and 

Finally:

5(0)-4(0)^2+3
Answer:
=3
Best of wishes and good luck!!
11 x 9/10 = (11 x 9)/10 =99/10=9.9
Answer:
206 2/3 ft³
Step-by-step explanation:
The volume of this solid is given by V = (1/3)(base area)(height).
Here, V = (1/3) (62 ft²) (10 ft ) = 206 2/3 ft³