Find the ratio of the areas of the squares PQRS to ABCD where PQ=9cm and AB=5cm?

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.

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

When y’all answer can y’all explain too !