Agreed that this statement is true indeed
4 or more apples could be green because if there are 3 or less red then there must be 4-7 green
Answer:
The ordered pairs of A and C are not functions
Step-by-step explanation:
To determine if the ordered pairs are a function you look at the x values to see if they repeat. You don't want one input(x values) to lead to two outputs(y values). This would mean that you are never sure which output you will get.
In the answer A the x value "2" repeats, in the answer C the x value "1" repeats thus not making them functions.
For this case, the first thing we must do is define variables.
We have then:
x: number of years
y: total salary
For company 1 we have:

For company 2 we have:

By the time both salaries are equal we have:

From here, we clear the value of x.
We have then:


Answer:
Brenda's salary would be the same with both companies in 8 years.
So, the function is obviously shifted up by 1 so it rules out A and B, and we also see that the period is 4pi rather than 2pi, and using the fact that:

Now that we know our b value, we see that the correct answer would be C.