Write a system of linear equations to represent the matrix equation.

1.

16 8 0
9 1 3
2 0 3

·

x
y
z

=

2
9
12

2.

6 2 5
3 1 3
2 5 3

·

x
y
z

=

3
2
6

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Sandy is upgrading her internet service. fast internet charges $20 for installation and $52.45 per month. quick internet has free installation but charges $57.45 per month. part 1 out of 2 complete the equation that can be used to find the number of months after which the internet service would cost the same. use the variable x to represent the number of months of internet service purchased.