Help, please! I'll give branliest

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.