Write f (x) = (x – 8)2 + 20 in standard form. f(x) = x2 – 16x + 84
f(x) = 22 - 16x + 148
f(x) = x2 – 16.3 +212
f(x) = x2 – 32x + 84

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

something over 10 so ? /10

step-by-step explanation:

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step-by-step explanation: