Question

Solve this problem plsssss

Answer 1

the answer is A

k(4) = 5(4) + 2 = 22
k(1) = 5(1) + 2 = 7

therefore k(4) - k(1) = 15

Answer 2

K(x)=5x+2

K(4) put 4 where the (x) is
K(4)=5(4)+2
20+2
K(4) = 22

K(1) put 1 where the (x) is
K(1)=5(1)+2
5+2
K(1) = 7
Now
K(4) - K(1)
22 - 7
Answer is 15