2x -y=6 and x+y=-3 solving systems by substitution

The amount of energy it takes to lift a box might be a function of which of the following

Write an expression that represent sarah’s total pay last week. represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?

Fill in the table with whole numbers to make 430 in five different ways