BRAINLIEST to whoever gets it right ​

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

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: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1