In "SUM(number1 [, number2, number3, ...])", number 1, number 2, and number 3 may be numbers or .A. lettersB. cell referencesC. symbolsD. operators

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

a) 0,0; 1,1; and 2,2

step-by-step explanation:

these have the exact same coordinates, thus they are the correct function.

86

step-by-step explanation:

find the area of the triangle then multiply by 2 then add the area of the parollelegram multiplied by 2