For the function F defined by F(x)=x^2−2x+4, find F(b+3). A. 4
B. b^2−2b+7
C. b^2−2b+19
D. b^2+4b+7

associative property of multiplication

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong

a

step-by-step explanation:

given the 2 equations

- x + y = - 2 → (1)

2x - 3y = 4 → (2)

multiplying (1) by 2 and adding to (2) will eliminate the x- term

- 2x + 2y = - 4 → (3)

add (2) and (3) term by term

(2x - 2x) + (- 3y + 2y) = (4 - 4), simplifying gives

- y = 0 ⇒ y = 0

substitute y = 0 in either of the 2 equations for corresponding value of x

substituting in (2) gives

2x = 4 ( divide both sides by 2 )

x = 2

solution is (2, 0 ) → a