The total cost of 9 rulers and 3 folders is $18.90, and if the cost of a ruler is $a and a folder is $1.10 more expensive

How do i work this problem out using the equation a=pe^rt

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

Given the graphed function below which of the following orders pairs are found on the inverse function