In a middle school classroom there are 4 boys for every 6 girls. How many boys would there be in a classroom with 30 student?

In the surface area formula for cylinders which expressionrepresents the lateral area

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

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?