Mr. Shaw is making hamburgers for the cookout at his family reunion. He buys 12lbs of meat at $3.19 per pound and 6 packages of buns at $1.49 each. If he gives the store clerk $50, how much change should he receive?

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 is he correct? explain why or why not?