Something costs $4.50 for 20 ounces. If 16 ounces are in a pound what would be the cost per pound. Plz help

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

I’m still confused on how to work the percentages