Luke: 2 miles in 40 minutes, 20 minutes a mile, (2/40 = 20 minutes a mile)
Luke's speed is 3 miles an hour (60minutes/20minutes a mile = 3miles).
Sally: 0.05 miles a minute, 60 minutes in an hour, 60 x 0.05 = 3 miles an hour. Or 0.05 miles a minute, 40 minutes walked, 40 x 0.05 = 2 miles walked.
There are a few other ways to show that they are accurate rates.
So yes, they are both correct rates.
100+x (s)+68.25(t)=a
S=shirts
T=trophies
A=amount paid
A would be the correct answer
Answer:
9x^2 -24x +13
Step-by-step explanation:
(g º f)(x) = g(f(x))
g(f(x)) = (3x-4)^2 - 3
(3x-4)^2 = 9x^2 - 24x + 16
g(f(x)) = 9x^2 - 24x + 16 - 3
g(f(x)) = 9x^2 -24x +13
