The answerer is combining terms in x with constants
that is, 13x + 5 ≠ 18x
13x + 5 + 17x - 4.5 + x
= (13x + 17x + x ) + 5 - 4.5 ← collecting like terms
= 31x + 0.5 ← correct simplification
Answer:
1. The vertex of the function is at (1,-25)
5. The graph is a negative on the Entire interval -4<x<6
I get x/13 = 106/9............so 9x = 1378 therefore x = 153.1
The anwser is 44 in because 5×2=10 for the length and 4×3=12 for the width and since its a square the equation looks like this 12+12+10+10 and thats how you get your anwser p.s. I hope this makes sense XD
hope this helped and dont forget to hit that heart :)
I don’t have the answer but for questions like that go to Demos Graph Calculator and it will say the answer, after you put in the points
