Al has twice as many baseball cards as frank and 4 times as many football cards as joe. the expression to 2x + 4y can be used to show the total number of baseball and football cards al has. if the answer is y, then what is the question ?

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.