Afirefighter need to reach the 9th floor of a building which is 120 feet high how far should his letter be extended if the fire truck contain the base of the ladder is propped 160 feet away from the building

200

Step-by-step explanation:

this is a 3-4-5 triangle so since 120/3 and 160/4 = 40 which are the two sides the ladder is 5*40=200

29.5977692753

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).