Question

Given below is the even-number function. Which of the following are equal to E(21)? Check all that apply.

Answer 1

E(n)=2n
E(21)=2(21)
E(21)=42

B works

see others

A. E(15)+E(6)=30+12=42, yep
B. 42 is confirmed
C is wrong
D. E(11)+10=22+10=32, nope


answer is A and B