Order the steps in solving the system of linear equations by substitution. Y=x+3

Volume of a cylinder with a radius of 13 in and height of 30 in

What is the slope of a line that is perpendicular to y = 3x + 1

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