How do i solve this? if 5x + 3y= -6 2x - 3y = 27 then what does x equal and what does y equal

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

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.

Is this a polynomial function? i need to know asap