D would be too late because you’d be changing to a new insurance policy. A would be the best option
3r + 2rt = 18
r is the common factor
r(3 + 2t) = 18
r= 18/ 3 + 2t
r= 6 + 9t
Hope this helps!
Cookies baked = 12 × 3 (number of trays) = 36
Bags = 4
In 4 bags = 36 cookies
in 1 bag = 36/4 = 9 cookies (divide both sides by 4)
SO 9 COOKIES WERE PLACED IN EACH BAG
hope this helped :)
