Help fast I can’t figure it out. Please show work 18 pts

What is x and y (use substitution? ) 5x+3y=38 and y=3x+8?

Listed in the table is the percentage of students who chose each kind of juice at lunchtime. use the table to determine the measure of the central angle you would draw to represent orange juice in a circle graph

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10