H+s=244
h=s-38
sub s-38 for h
s-38+s=244
2s-38=244
add 38 both sides
2s=282
divide 2 both sides
s=141
sub
h=s-38
h=141-38
h=103
103 hot dogs
141 sodas
r · 7 ≤ 21 [r multiplied by 7 is less than or equal to 21]
7r ≤ 21
[If you wanted to solve it]
7r ≤ 21 Divide 7 on both sides to get "r" by itself

r ≤ 3
1. in the tenths place
2. 9 tenths
Answer: Los Angles will be directly west to San Francisco in a little less than 25 million years.