from the top of a cliff the angle of depression of a boat is 24°. the boat now sails 50 metres towards the cliff and the angle of depression now is 83°. find the height of the cliff?

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)