Answer:
x= -6
Step-by-step explanation:
5z>15-----subtract 2 on both sides
z>3----divide by 5
therefore, z must equal -10, or -4
(40 * 25) + 0.10x = (40 * 20) + 0.20x
1000 + 0.10x = 800 + 0.20x
1000 - 800 = 0.20x - 0.10x
200 = 0.10x
200/0.10 = x
2000 = x <=== weekly sales must be $ 2000
Equation parallel to y = -x is y=-x+k
so 4.5 = -7 + k so k - 11.5
Equation is y = -x + 11.5
Answer:

Step-by-step explanation:
Factorise in order to reveal factors.
