A.
Step-by-step explanation:
Range of a function is the value that we get when a function is solved.
Say, f(x) = y.
We say this "set of x is domain" whereas "set of y is range".
Suppose,
set A = {1,2} & set B = {1,2,3} & f(x) = y
Let,
f(1) = 1, & f(2) = 2.
What we get is that there is no x for 3.
We say this fact by "set A is domain" & "set B is co domain" & set {1,2} (output) is range.
Answer:
x= 16
y= -13
x+y=3
x-3y=-29
Eliminate x and subtract the equations
2y=-26
Plug in y for first or second equation
x=16
20 km/h
Zoey rode a total of 120 km (there and back) in a total time of 6 hours (=2.5+3.5). Her average speed is given by ...
speed = distance/time = (120 km)/(6 h) = 20 km/h
A is the answer
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