Elaine bought a total of 20 shirts and pair of pants. she bought 7 more shirts than pants. how many of each did she buy?

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?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

How many solutions does the nonlinear system of equations graphed below have?