The zero of this function is 10.2564103 ( or 10 if you round it) because you need to substitute d with 0. The value of this context means the maximum amount of trading cards you can get with the gifts card
27.6/100 = 0.276
The average amount of rain that fell is 0.276 inches per day.
Is the greatest factor that two or more numbers have in common. One way to find the GCF is to make lists of the factors for two numbers and then choose the greatest factor that the two factors have in common.