15 meals x $0.80 = $12.
$18 - $12 = $6.
If one movie ticket is $3 then she must have purchased 2 with $6.
Part A - 15x0.8=18-x=x
Part B-
15 x 0.8 = 12
18- 12=6
Part C- 2
The LCM of 3 and 4 is 12.
I hope this helps and have a good night! :D
0.5 is the decimal equivalent to 1/2
Just the first one, r is 4x+2, and h is 5x+4, plug them into the formula pls