Bill made $231 for 11 hours of work. At the same rate, how many hours would he have to work to make 105 ?

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

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.