Question

Write an algebraic expression for arin has $520 and is earning 75$ each week babysitting

Answer 1

Since we know he earns $75 a week we can write 
$75x 
And we know he already has $520, so just add that. 
+$520 

So we would set up our algebraic expression like this. 
$75x + $520 

Good Luck! :)