Plz help need fast bc im kinda behind

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

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.

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.