Use the substitution method to solve this system. y = x − 4 and -2x + y = − 7

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.

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay

Simplify the rational expression. state any restrictions on the variable. t^2-4t-12 / t-8 the / is a fraction sign.