you deposit 200 into an account that pays 7% interest compounded quarterly. how much will you have in 5 years

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.

True or false look at the picture pls : /

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0