In 9290 the value of the first 9 ten times great as the value of the second 9?

Barbara's piano instructors house is 7 1/8 miles from her house. after biking for 1 3/4 miles she stops to rest how much longer does she need to bike to reach her instructor's house

What is the solution of log2  (3x  -  7)  =  3? 4 5

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.