7) BRAINLIEST + + POINTS :D

C. 34%

Step-by-step explanation:

Hello there!

Divide the solutions into 100s, and find their percentages.

60/100=0.6*40=24

40/100=0.4*25=24+10

24+10=34 %

;)

34%

Step-by-step explanation:

To find the concentration of the new solution, take the percent time the amount of each of the solutions

40 ml* 25% + 60 ml * 40% = 100 ml* percent

40 * .25 + 60 *.40 = 100 * P

10 + 24 = 100 P

34 = 100 P

Divide each side by 100

34/100 = P

.34 = P

Changing to a percent

34% = P

3201

step-by-step explanation:

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

hope this !