Can someone like tutor me in 8th grade math lol. I want to be in honors classes for high school but i suck at math

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Zach spent 2/3 hour reading on friday a 11/3 hlurs reading on saturday. how much more time did he read on saturday tha on friday