# High School: Algebra

##### HSA.REI.C9

(+) Find the inverse of a matrix if it exists and use it to solve systems of linear equations (using technology for matrices of dimension 3 x 3 or greater).

October 1, 2018
##### HSA.SSE.B3b

Complete the square in a quadratic expression to reveal the maximum or minimum value of the function it defines.

October 1, 2018
##### HSA.SSE.B3c

Use the properties of exponents to transform expressions for exponential functions. For example the expression 1.15t can be rewritten as (1.151/12)12t ≈ 1.01212t to reveal the approximate equivalent monthly interest rate if the annual rate is 15%.

October 1, 2018