The ratio of boys to girls in a group is 4.3. If there are 5 more boys than girls, work out how many girls there are

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

Ineed to know the answer to this algebra question.

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4