Help please it’s due tomorrow

What is 20+(5 x 2/5 )+ 3 show your work

The volume of a cube is 8 in to the 3rd power. how long is each side?

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