Anickel and a dime are flipped. what is the probability both coins will land tails up

(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

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64