Answer:
a. 
b. 
c. 
d. -6t - 5
Step-by-step explanation:
When a number has the same variable as another, you can add or subtract them
So for the first one, you can do

(But don't forget the
!)
So it is:

Continue this process for the rest of them
Answer:
Step-by-step explanation:

= 6.5%
Answer:
-2y^2 + y +32
Step-by-step explanation:
The variable with the highest exponent is y^2