8less than or equal to 2(n+5) < 14

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

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?