Which of the following is a monomial?
a. 2xyz2
b. 2 + xyz
c. 2x + yz
d. 2x − yz

X+y=-4 x-y=2 use elimination with adding and subtraction

Which of the following disjunctions is true? 4 + 4 = 16 or 6 - 5 = 11 4 · 3 = 7 or 3 - 2 = 5 8 - 5 = 13 or 7 · 2 = 12 7 - 4 = 11 or 6 + 3 = 9

What are two numbers that have a sum of 15?