PLEASE HELP Which of these numbers is expressed properly in scientific notation?

Five dinosaurs go for a walk and come across some lovely chicken wings. their names are rexy, bronto, steggy, paly, and terry. there are exactly 5 dozen wings(equal enough for each dino to have a dozen right? ); however, terry is on a diet and he only eats 6 wings. if paly eats 2 more than terry, steggy eats 4 more than paly, and bronto and rexy eat the same amount because they are really hungry from not eating all day, how many chicken wings did each dino eat?

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

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41