Line f has a slope of -9/7. Line g is perpemdicular to f. What is thr slope of line g

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15