Can someone me with 11 to 16. this is for a test with explanation

11= 18

12= 4.5

13=45

14= 9.6

15= 23.3

16= 21

Step-by-step explanation:

First let's figure out how to multiply a fraction by a whole number.

3/7 * 42

because 42 is a whole number we have to put a one under it making it be 42/1

now we have to multiply top by top and bottom by bottom

3 * 42 =  126

7 * 1   =    7

Now we technically could leave the fraction like that, but its up to how your teacher wants it though.

But if you want to simplify it we have to divide the top by the bottom

126/7 = 18