Consider the following system of equations and their graph as picture

(-2,5) and (7,23)

Step-by-step explanation:

we have

---> equation A

---> equation B

Solve the system by graphing

Remember that the solution of the system is the intersection point both graphs

Using a graphing tool

The intersection points are (-2,5) and (7,23)

see the attached figure

therefore

The solutions are (-2,5) and (7,23)

1.5D in

Step-by-step explanation:

we know that

A worker uses 450 inches of steel wire to make 300 springs

so

using proportion

Find out how many inches of steel  wire are needed to make D spring

Let

x -----> inches of steel needed