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3 years ago

F(x) = x + 7 g(x)= 2x2 – 5x – 12 Find: g(f(x))

Mathematics

1 answer:

Lelu [443]3 years ago

8 0

Answer:

$f(x) = x + 7 \\ g(x) = {x}^{2} - 5x - 12 \\ g(f(x)) = {x}^{2} - 5x - 12 + 7 \\ = {x}^{2} - 5x - 5$

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4 years ago

Nadia is a stockbroker. She earns 4% commission when she sells stocks. Last week, she earned $288 in commission.

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a)The total amount of her weekly stock sales = $7,200

b) The total amount of her yearly stock sales = $350,000

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(a) Let us assume that the total a mount of her sales in a week = $m

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Now, 4 % of her total sales = $288

or, 4% of ($m) = $288

⇒ $\frac{4}{100} \times m = 288$

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b) Let us assume that the total amount of her sales in a year = $k

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Now, 4 % of her total sales = $14,000

or, 4% of ($k) = $14,000

⇒ $\frac{4}{100} \times k = 14,000$

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3 years ago