Please ASAP Andy found these used car prices in the newspaper

Tell whether the two rates form a proportion

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

If you invest 1,500 today in a bank that gives you a 5 percent annual interest rate, which of these items can you buy in two years? a. electronics worth $1,650 b. fitness equipment worth $1,700 c. a holiday package worth $2,000