Question

You had $150, but you are spending $2 each day.What algebraic expression models this situational?

Answer 1

Hello!

First, set a variable for "spending $2 each day". This is important as the number of days passed is not set, and it varies, so we need a variable for it. Say d = number of days passed.

Now, write out the equation. The first thing we want to write is "You had $150". This can be represented by just writing out the number 150.

Our equation now: 150

Finally, add the variable. This would be "you are spending $2 each day". For this, you must subtract 2 times d from 150.

Our final equation: 150 - 2d

Hope this helps!