Hi please help! ill give u a good 5 starz :)

Option C and D!

Step-by-step explanation:

When 9 is placed in the box after 7, we get:-

7 ÷ 9 = which is correct!

7 ÷ 9 can also be written as . So, this Option is right since the equation is correct when 9 is placed in the box!

When we place 9 in the box before , we get:-

9 ÷ = 81

9 ÷  equals 9 x 9 (take the reciprocal of )

9 x 9 equals 81 which means the equation is correct when 9 is placed in the box!

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

215.92 dollars is the answer