Please help.

3 pairs of jeans are 20% off. 2 pairs of shirts are 35% off. The jeans cost $40 each, and the shirts cost $50 each. What is the percent of savings from this sale? Explain step by step.

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?

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g