Formulas: Use the formula to find the value of the variable indicated.
9
9. F=-C + 32 (to find the Fahrenheit temperature (F) equivalent to the given Celsius
5
temperature (C), find F when C = 10°

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