Please help with this?

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.

Find the equation using the point (4,8)

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height