Ethan is printing some materials for a meeting if the printing of the first copy cost 1 1/2 dollars and other copies cost 4/5 of a dollar each to print how much will it cost if he is making 13 copies?

  $11.10

Step-by-step explanation:

The last 12 copies cost $0.80 each, so the price of those plus the $1.50 price of the first copy will be ...

  $1.50 +12×0.80 = $1.50 +9.60 = $11.10

Ethan's printing job will cost $11.10.

the answer is c.

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,