Cans of wood varnish come in three sizes. Small can: A 200 ml can costs £0.56.
Medium can: A 500 ml can costs £1.32.
Large can: A 1 l can costs £2.68.

Calculate the cost of 1 l for the small and medium cans.
Give your answer in pounds to 2 dp.

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

this is a good question! i’ll do some research and what i find, i’ll contact you asap when i have something! ✊