What's the answer for 2p+5r=q for p

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Which function has the domain x> -11?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.