F(x)=-2x+4x-7
f(x)=2x-7
now f(-4)=2(-4)-7=-8-7=-15
So it will be -15
40x = x+4
x= (x+4)/40
x= x/40+4/40
x-x/40= 4/40
(40x-x)/40= 1/10
39x/40= 1/10
39x= 1/10*40
x= 4/39
Answer:
Step-by-step explanation:
Replace x with -5
2(-5)+7
-10+7
-3
Answer:
184
Step-by-step explanation:
17.70 / 170 = .104 per text
19.10 / .104 = 183.65 round up to 184
a 1.25L Coca Cola that cost $1.29
Unit rate means we need to find the rate of 1 liter of Coca Cola
1.25 L Coca Cola = $1.29
1 L of Coca Cola = ?
To find 1 liter of Coca cola divide the cost by liter, so we divide 1.29 by 1.25

1.032
So the cost of 1 liter of Coco Cola = $1.032