1. 20 is what% of 40 2. 8 is what % of 32 3. what % of 40 is 2 4. 100 is what % of 25 5. 3 is what % of 2 6. what is 15% of 300 7. 33 out of 75 is what % 8. what % of is 18 is 12 9. what is 35% of 1000 10. 40 is 20% of what # me and show explanation even if it's long me i'm failing

See below.

Step-by-step explanation:

To calculate a percentage divide by the part by the whole, You will get a decimal. The decimal becomes a percentage after you multiply by 100. This moves the decimal place two places to the right. So 0.10 becomes 10%.

1. 20 is 50% of 40 since 20/40 = 0.5

2. 8/ 32 = 0.25 so it is 25%

3. 2/40 = 1/20 = 0.05 so it is 5%

4. 100/25 = 4 so it is 400%

5. 3/ 2 = 1.5 so 150%

To find a percentage of a number, multiply the number by the decimal conversion of the percent.

6. 0.15(300) = 45

7. 33/75 = 0.44 so it is 44%

8. 12/18 = 2/3 = 0.66 so it is 66%

9. 0.35(1000) = 350

10. 40 is 20% of what can be solved by remembering that 20* 5 = 100%. So 5*40 = 200. The number is 200.

multiply each one by 3.14

step-by-step explanation:

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.