9n + 8 = 27 rounded to the nearest hundredth:

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

Solve for b. ab + c= d b= a + old ob=allc-ch b= (d-c/a