Father age is in teo digit number. if 5 is added to the double of the tenth palce number of the father age eill be the age of the son. if 1 is substracted

step-by-step explanation: you take each of the numbers and divide by the amount then you take the range

im not sure

step-by-step explanation:

christopher is 272,195 year old

step-by-step explanation:

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).