It’ll be 7:11 you can also say 7 to 11 the reason for this is because there is 7 red shirt which will go on the left and there is 11 black shirts which will go on the right
Step-by-step explanation: It explains at the end that she bought 30 prints. You would take 30 and just plug it in for X. So the formula would look like this, B(x)=50.75-0.10(30).
