Answer: $84
Explanation:
Since child tickets cost $4, and there are 6 children, multiply 7 and 4.
7 x 4 = 28
Then, since adult tickets are $8 each and there are 7 adults, multiply 7 and 8.
7 x 8 = 56
Add the two totals together: 56 and 28.
56 + 28 = 84
So, the movie tickets will cost $84 in all.