How many milliliters of pure acid must be added to 100 milliliters of a 10% acid solution in order to obtain a 20% acid solution.

22.5

Step-by-step explanation:

0.80x=10 divide each side by 0.80

x=12.5 mlamount of pure acid needed

CK

12.5+10=0.20(100+12.5)=0.20(112.5)

22.5=22.5

Hope this helps

answer

see attachment

explanation

the given function is

this function has y-intercept at

-4 and a slope of 2.

note that, the graph has a positive slope.

the graph that represents this function is the straight line that moves upward from left to right.

the graph touches the y-axis at -4.

the correct choice is the graph shown in the attachment.