15 is the GCF of 15 and 30, as 15 is the largest factor of 15 and 30.
Answer: 450 kcal
Step-by-step explanation:
So you know the food is 360 kcal per 1 cup
by setting up a proportion, you can relate the number of kcal to cups.

we can simplify the fraction to this:

by cross multiplying you can solve the proportion
(360) * (5/4) = (?) * (1)
simplifying gets this:
450 = ?
so he ate 450 kcal total
4x10^7 The number of zeros the given number has would be the exponent
What grade are you in I mite have the picture of the answer