Answer:
2
Step-by-step explanation:
2(z)+2 = 4
2z = 2 x 2 = 4
Check the picture below.
something worth noticing
so, we're really graphing x+2, with a hole at x = 3, however, when x = 3, we know that f(x) = 5, but but but, when x = 3, x+2 = 5, so we end up with a continuous line all the way, x ∈ ℝ, because the "hole" from the first subfunction, gets closed off by the second subfunction in the piece-wise.
Use the distance formula d=rt, where d=distance, r=rate, t=time:
d=rt
d=5 x 80
d=400 miles
Hope this helps :)
They are all 60 if they are concecutive