Me and my mate dave order pizzas. i eat six eights of mine, dave only manages two sevenths of his. if we put the remains together, can we make one whole pizza?

What is the first step of an indirect proof of a number that is divisible by two

A50% increase followed by 33 1/2% decrease

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.