Which algebraic expression represents this phrase ? the product of 40 and the distance to the finish

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?

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.