Answer:
36 minutes
Step-by-step explanation:
1 hr = 60 minutes
grandson scarf = 60 minutes + 57 minutes = 117
granddaughter = 60 minutes + 21 minutes = 81
117 - 81 = 36
Answer:
Rewrite the equation as:
y = (231 + 7x)/25
Then plug it into a graphing calculator
Find all the number in the set that are less than -7.
The 'bigger' the negative number seems, the smaller it is.
So -15, -10.5, and -7.2 are all less than -7.