Question

UNIT TEST TIMED!!!

The range of which function is (2, ∞)?

a) y = 2^X
b) y = 2(5x)
c) y = 5x +2
d) y = 5x + 2

Answer 1

`y=5^(2) +2`

Explanation:

A function
`f` from a set
`A` to a set
`B` is a relation that assigns to each element
`x` in the set
`A` exactly one element
`y` in the set
`B`. The set
`A` is the domain (also called the set of inputs) of the function and the set
`B` contains the range (also called the set of outputs).

To solve this problem, we have plotted each function and are shown in order below. As you can see:

`y=2^(x)`

`y=2(5^(2) )`
`and`
`y=5^(x+2)`

have the same range (0,∞). The only graph that shows a range (2,+∞) is the function
`y=5^(x) +2` so that's the answer.

Answer 2

b

Explanation: