Anyone please help I just need the solution!!

50 points~ ! i have to turn this in tomarrow

Which equation represents h for right triangle abc

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!