No it's not a function pretty sure
Step-by-step explanation:
a(n) = a ( n - 1) - 17
a(1) = 20
a(2) = a ( 2 - 1) - 17
= a (1) - 17
= 20 - 17
= 3
Now
a(3) = a ( 3 - 1 ) - 17
= a (2) - 17
= 3 - 17
= - 14
Hope it will help you.
Answer:
2
Step-by-step explanation:
Using the rule of radicals
×
⇔
, then

= 
=
× 
= 2
To serve 3 you half the recipe so divide each number by 2
3/4 cup/2 = 3/8 cup granulated sugar
1 cup/2 = 1/2 cup of evaporated milk
1/3teaspoon/2 = 1/6 teaspoon of vanilla
12 slices/2 = 6 slices of French bread