If 5 over 6 gallon covers 1 over 4 of the house then how much paint is needed for the entire house

How do i multiply two digit numbers

Atourist boat is used for sightseeing in a nearby river. the boat travels 2.4 miles downstream and in the same amount of time, it travels 1.8 miles upstream. if the boat travels at an average speed of 21 miles per hour in the still water, find the current of the river.

Solve 2x − 1 = 11 for x using the change of base formula log base b of y equals log y over log b.