Answer:
27 people
Step-by-step explanation:
Out of 10 people, 7 people ordered a hot dog.
Multiply both sides by 9:
Out of 90 people,
people ordered a hot dog.
Thus, 63 people ordered a hot dog.
Number of people who did not order a hot dog: 
Answer:
Step-by-step explanation:
The story problem of shawn's poster length and width is the correct one
Answer:
$390+0.07s=$544+0.05s Subtract $390 from each side.
0.07s=$154+0.05s Subtract 0.05s from each side.
0.02s=$154 Divide each side by 0.02.
s=$7700 Both plans pay the same when sales=$7700
ANSWER With sales greater than $7700, Chris is better off with Plan A.