Evaluate the expression when c=47 and d=4
c-3d

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

Can someone me with this problem i don't understand i need

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