Pl so many points you can model the population of a florida town between the years 1980 and 2015 by the function f(x) = 90,000(x − 1960) to the 1/2 power, where x is the year. in what year did the town have a population of 450,000?

Step-by-step explanation:

divide both sides by 90,000 then you get 5=(square root)x-1960 then you square both sides to get 25=x-1960. Add 1960 to both sides.

X=1985

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

m∠a is 90°

m∠b is 40°