ok can someone tell me why I join it says that I have to pay so that I can see unlimited questions, because the old account I didn't have to pay, just asking

Two lines parallel to the same plane are parallel to eachother

When you answer this can you explain

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.