Solve the system using substitution:
y = -6x + 7

3x – 2y = 16

helppp

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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.