Bert skies for 1 3/4 hours friday night, 5 1/3 hours saturday, and 3 1/6 hours sunday afternoon. how many hours did he spend skiing that weekend?

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882