Solve this application problem using a system of equations: A university bookstore recently sold graph paper for $1.64 per package, and college-ruled notebooks for $1.17 each. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $66.02. How many of each type were sold?

3

step-by-step explanation:

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation:

50x5=$250

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,