Idk the answer can someone pls help me

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

What is the value of x in the equation7x+2y=48 when y=3

Find the area between y=e^x and y=e^2x over [0,1]