Mathematics: Which ones are proportional and which ones aren t? There are 2 that are proportional and 3 that aren t. PLEASE HELP!

Which ones are proportional and which ones aren t?

biggiecheese93

06.02.2022

Janna runs at a steady pace: Proportional

Vu is four years older than his sister: Proportional

Carlos wants to buy some new video games: Proportional

Anna has a new video game: Not Proportional

A single ticket to a concert costs: Not Proportional

Step-by-step explanation:

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sickomode2048

10.02.2020

ANSWER

$(f\circ g)(x)=7 {x}^{2} - 9$

EXPLANATION

It was given that;

f(x) = 7x - 9

and

$g(x) = {x}^{2}$

We want to find an expression for the composition function;

$(f\circ g)(x)=f(g(x))$

$(f\circ g)(x)=f( {x}^{2} )$

We substitute x² into f(x)=7x-9

This will give us:

$(f\circ g)(x)=7 {x}^{2} - 9$

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