*10 ml : 21*
pls help me with this ratios question in (simplest form) pls​

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.

What expression is equivalent to 42x-56y

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?