[tex]\text{Hello there!}[/tex]
First, we will need to find out how much each of the bakeries accrued within 7 days. We should be able to do this by simply multiplying the amount of cakes the bakery sells each day by the amount of days it's been accruing it for.
For example:
[tex]\text{7}[/tex] • [tex]\text{7}[/tex] = [tex]\text{49}[/tex]
[tex]\text{9}[/tex] • [tex]\text{7}[/tex] = [tex]\text{63}[/tex]
Since the answer doesn't explain if you're giving EACH of the bakeries amounts or combining them, that's up to you to decide if you want to do that or not.
