An airplane over the pacific ocean sights an atoll at an 7° angle of depression. if the plane is 663 m above the water, how many kilometers is it from a point 663 m directly above the atoll

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?

How can i differentiate this equation?

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!