The table shows the means and the standard deviations of the scores obtained by a class of students in a Chinese test and an English. The scores of Herman in the Chinese test and the English test are 70 and x respectively, where x is an integer. If he performs better in the Chinese test, find his highest possible score in the English test.

your answer would be 10x - 1

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).