Answer:
1. x = -6, -8, -90
2. solutions for
include -5, while -5 is not a solution for ![-2x>10](https://tex.z-dn.net/?f=-2x%3E10)
Step-by-step explanation:
part A:
company a
30m+15
m= matress
company b
28m+21
m=matresses sold
part B:
company a
30(6)+15
195$
company b
28(6)+21
189$
company B charges less
part C:
company a
30(3)+15
105$
company b
28(3)+21
105$
there is no change at all so you do not save anything.
Answer:
y = (5/7)x + 3
Step-by-step explanation:
We use the form y = mx + b. Substituting (5/7) for m, 7 for x and 8 for y, we get:
8 = (5/7)(7) + b, or 8 = 5 + b. Thus, b = 3, and the desired equation is
y = (5/7)x + 3