Answer:
i dont know... i am sorry but you need to show the venn diagram for us to help you... please do the venn diagram and the question next time! Thank you!!
Step-by-step explanation:
n * 7
7n
both are multiplying 7 and the number n
16 + 3n
a = 19 ; common difference = 22 - 19 = 3
a(n) = a + (n -1 ) *d
= 19 + (n-1)*3
= 19 + 3n - 3
= 16 + 3n
A true
