Answer:

Step-by-step explanation:
Use formula

to convert Celsius to Fahrenheit.
When
then

When
then

Difference:

Answer:
3y + 2 =
Step-by-step explanation:
7y - 4y = 3y
3y and 2 are not like terms, so you can't add any further
Answer:
x=-1
Step-by-step explanation:
just like 8/8 is 1 the same concept only you add a negative
Answer:
A. and C.
Step-by-step explanation:
We don't know the area of the roof or the number of people in the group so they would both be represented by variables in an equation.