At the beginning of the school year, the batteries and all the graphing calculators were replaced. Each calculator required 4 batteries. Office plus offered a back to school special price of $32.98, including tax, for a package of 20 calculator batteries. how much did it cost to replace the batteries in 110 graphing calculators? A. $131.92 B. $181.39 C. $659.60 D. $725.56

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6