Answer:
I will just show you how to substitute.
Step-by-step explanation:
all you have to do is just plug f(x) into the number you want. So if you see any x's, all you gotta do is plug that number after f for x.
So an example of an equation for one of your number is:
you then want to plug the number after f for the x's. (I'm doing f(-3).
You then should get the equation above.
after that you solve.
just follow these steps and you should be fine :))
Answer:
A) 75 levels
B) Level 35
Step-by-step explanation:
A) 37 - (10 - 3) = 37 - 7 = 30
= 
2x = 150
x = 75
B) Gym = 37 + 3 = 40
12
% = 12.5% = 0.125
40 x 0.125 = 5
40 - 5 = 35
Answer:
3$
Step-by-step explanation:
To find percentage on a discount like this all you have to do is multiply the pre-discount number by your discount percentage.
So all you have to do is:
15 x 0.20
which gives you an answer of 3.
Thus the post-discount amount is $3.
82 cubic feet is the answer
Answer:
5 seconds
Step-by-step explanation:
Looking at your function (h(t) = -16t^2 + 48t + 160), I see that the peak height will be 196 feet, and that is achieved in 1.5 seconds.
h(1.5) = -16(1.5)^2 + 48(1.5) + 160
h(1.5) = -16(2.25)+ 48(1.5) + 160
h(1.5) = -36 + 48(1.5) + 160
h(1.5) = -36 + 72 + 160
h(1.5) = 36 + 160
h(1.5) = 196
Going down from that height, it would take 3.5 more seconds, so it would take 5 seconds in total
h(5) = -16(5)^2 + 48(5) + 160
h(5) = -16(25) + 48(5) + 160
h(5) = -400 + 48(5) + 160
h(5) = -400 + 240 + 160
h(5) = -400 + 400
h(5) = 0
