Answer:
A) f(t) = 4(t − 1)^2 + 3; the minimum height of the roller coaster is 3 meters from the ground
Step-by-step explanation:
f(t) = 4t^2 − 8t + 7
Factor out 4 from the first two terms
f(t) = 4(t^2 − 2t) + 7
Complete the square
(-2/2)^2 =1 But there is a 4 out front so we add 4 and then subtract 4 to balance
f(t) = 4( t^2 -2t+1) -4 +7
f(t) = 4( t-1)^2 +3
The vertex is (1,3)
This is the minimum since a>0
The minimun is y =3 and occurs at t =1
Answer:
B) only (-3 , 3)
Step-by-step explanation:
y = -3x - 6
(-4,4) y = -3 x (-4) - 6 = 12 - 6 = 6 .... incorrect
(-3,3) y = (-3) x (-3) - 6 = 9 - 6 = 3 ..... correct
Answer:
the answer is 68 because this is a width
The x=16 because you gotta subtract x one one side to make it a simple two step equation then to simplify x from 5x divide by 5 on both sides
