Corinne is 6 years younger than her brother. which of the following expressions shows the sum of their ages if b represents corinne's brother's age? a. b − 6 b. 2b − 6 c. 2(b − 6) d. b ÷ 6

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

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.

Can someone tell me if this is perpendicular? !