Math problem! Please help!?

Question

Okay, this is a two part problem. Help is always appreciated!
Part A
3
∑ |1 - t|
t= -2



Part B

4
∑ (answer to part A)^2 + 1

Answer 1

well..since t = -2 you replace it in the first problem

I1--2I

1--2 =3 and the two vertical lines mean absolute value which means you keep or change the number to positive

PART A = 3



PART B:

(3)2=1

always do multiplication first so 3x2=6

6+1=7

so PART B = 7

Answer 2

A) 3+2+1+0+1+2 = 9



B) either 4 [81] + 1 OR 4[ 81 +1] , since the sum generally starts at 1 if no start point given

Answer 3

There is part of question B missing as there is no summation to do.