Question

A new movie can be downloaded for $8 per movie. An older movie can be downloaded for $3 per movie. Quinn buys a total of 7 movies and spends $41.
a. Define your variables. Write the system of equations and represent it as a matrix equation.

b. Use matrices to solve the equation by hand. Show all work

Answer 1

Let x = # of new movies
Let y = # of old movies

8x + 3y = 41
x + y = 7

Answer 2

Do you understand part a) ? One equation is the cost the other is the amount of movies

Answer 3

thats the answer for one

Answer 4

yes. What is the matrix we can make from those equations

Answer 5

whats B

Answer 6

What is the matrix you can make from those equations?

Answer 7

idk

Answer 8

ex)
ax + by = c
dx + y = e

a b | c
d 1 | e

Answer 9

is that B.

Answer 10

I don't give answers. That was an example. Follow the patten and you'll get the matrix then you need to solve the matrix. Look up matrices.

Answer 11

whats the matrix