Given that f(x) = x2 - 4x – 21 and g(x) =X- express the result in standard form.
7, find f (x) – g(x) and express the result in standard form.

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46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm