Well, do you know what 12+1 is? Because if she ended with 12 and ate 1 to begin with, you just add those numbers together, and that is your answer!
A. 1 1/2 is equal to 1.5, so this is true
B. 3/4 is equal to 0.75 and 7/8 is equal to 0.875, this is true
C. -1.5 is less than both -1 and 1.5, this is false
D. 0.01 is less than 0.1, this is true
So the answer to your question is C
An easier way to think of this problem is just keep adding for each additional hour:
0.5 hours --> $2
1.5 hrs --> $3.75
2.5 hrs --> $5.50
3.5 hrs --> $7.25
and since you can only spend $7, the maximum time is 2.5 hours
Answer:
Cy-Cx=10,000 this is the best answer ever