About how many times heavier is the blue whale than the rhinoceros

If i had 1234 apples and 1 banana what is the total amount

Ben frank is an electrician who installs lighting fixtures. he charges (in dollars) his clients 15h+40f15h+40f where hh is the number of hours worked and ff is the number of fixtures installed. how much does ben frank charge when he works 77 hours and installs 99 fixtures?

What is the answer to this equation? and if you can, find a way to show your work.