You want to solve for x first:
x+4-3=1 (combine 4 and -3)
x+1=1 (subtract 1 on both sides)
x=0
Answer:
Step-by-step explanation:
1 kilogram = 1000 grams
since we need to know 25 kilograms you can do
25 x 1000
giving us 25,000
Lines y=-x+2 and y=3x+1 intersect the y=axis. If you plot them out on a graph using the equation y=mx+b, then they are parallel and are set on the y-axis.
Ok, to solve this first you have to set up your proportion:
9/150=x/230
/ is a fraction
x= the number of vials it will take to treat 230 patients
in order to solve this, you have to cross multiply:
9 x 230= 2070
150 · x= 150x
so you get 150x=2070
then divide 2070 by 150
2070/150= 13.8
so it would take 13.8 vials of medicine to treat 230 patients
I think that it is D or A
