Solve the linear equation: -8x+5y-10=2x

Given abcd ac=38 and ae=3x+4 find the value of x

Evaluate cos2θ for cosθ = square root of 3/2

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.