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 The model is 16.67 ft tall  16 feet, 8 inches

Step-by-step explanation:  Divide the real height by the scale.

1250÷ 75 = 16.667

This is a quick Short cut for working out the ratio x/1250 : 1/75

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.