Rafael and Roger played tennis against each other 30 times. Each of the times they played, either Rafael won or Roger won. The ratio of the number of times Rafael won to the number of times Roger won is 7 : 3 Work out the number of times Rafael won.

check the picture below.

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;

answer: asdfghjkl,mnbv

step-by-step explanation:

c.

step-by-step explanation: