Answer:
3.5 weeks.
Step-by-step explanation:
The equation is already made for us, so that makes it a lot simpler. All we have to do is solve it!
b=95+w(10+7)
Since it wants us to find how many weeks will pass before we have a total of $155, we can substitute $155 for b.
We can use the distributive property to simplify the parenthesis.
155=95+w10+w7
Now, add like terms.
155=95+w17
Subtract 95 on both sides to further simplify.
60=w17
Finally, divide both sides by 17 to isolate w.
3.5=w
So after 3.5 weeks you'll have $155 in your bank account.
Hope this helps!