Which ordered pair is a solution of the equation? 2x+3y=102x+3y=102, x, plus, 3, y, equals, 10
A
Only (2,2)(2,2)left parenthesis, 2, comma, 2, right parenthesis

(Choice B)
B
Only (1,3)(1,3)left parenthesis, 1, comma, 3, right parenthesis

(Choice C)
C
Both (2,2)(2,2)left parenthesis, 2, comma, 2, right parenthesis and (1,3)(1,3)left parenthesis, 1, comma, 3, right parenthesis

(Choice D)
D
Neither

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Choose the number sentence that shows the identity property of addition. a. 122 = 61 + 61 b. 62 = 1 + 61 c. 61 = 0 + 61

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?