Question

A walkway lighting package includes a transformer, a certain length of wire, and a certain number of lights on the wire. The price of each lighting package depends on the length of wire and the number of lights on the wire.  A package that contains a transformer, 25 feet of wire, and 5 lights costs $20.  A package that contains a transformer, 50 feet of wire, and 15 lights costs $35.  A package that contains a transformer, 100 feet of wire, and 20 lights costs $50. Write and solve a system of equations using Cramer’s Rule to find the cost of a transformer, the cost per foot of wire, and the cost of a light. Assume the cost of each item is the same in each lighting package.

Answer 1

Answer:

10=t, 0.2=ft/wire, 1 single light

Step-by-step explanation:

t=transformer w=wires L=single light

t+25w+5L=20

t+50w+15L=35

t+100w+20L=50

Interpret to (3x3)(3x1)=(3x1)

A^-1 x B = X (answer)