Answer:
They sold 38 phone cases.
Step-by-step explanation:
The equation I used to solve is

Answer:
he would have to do it 6 more times
Step-by-step explanation:
Answer:
33
Step-by-step explanation:
first you set up the problem, supplementary angles equal 180 degrees so the equation should look like, 4x+x+15=180. then you solve from there by combining like terms and you should get x equal to 33
Step-by-step explanation:
it may help you to understand.