Determine the vertex form of g(x) = x2 + 2x – 1. which graph represents g(x)?

g(x) = x² + 2x - 1

Since its a parabola we have the formula to the vertex

(Xv, Yv) = (-b/2a, -Δ/4a)

(Xv, Yv) = (-2/2.1, -(2² -4.1.(-1))/4.1)

(Xv, Yv) = (-1, -2)

the answer is D

Step-by-step explanation:

just got it right on E2020

answer: answer

step-by-step explanation:

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40