Answer:

Step-by-step explanation:
Given

Required
The phase
We have:

Rewrite as:

A cosine function is represented as:

Where:
Phase
By comparison:

Hence, the phase is: 
Answer:
$38
Step-by-step explanation:
If there are three adults (or not-students) then that amounts to $30
(10*3)
Since they all go in one car they only pay $8
Add them all together!
Answer:8
Step-by-step explanation:
48/4 = 12
12-4 = 8
Answer:
-3
Step-by-step explanation:
Let x equal the mystery number
Our equation will be:
x - 5 = 1 + 3x
Subtract x from both sides
-5 = 1 + 2x
Subtract 1 from both sides
-6 = 2x
Divide both sides by 2
-3 = x