Abox of 15 cookies cost $9, what is the cost of 1 cookie

60 Cents

Step-by-step explanation:

Ok, let:

Ic=Individual cost of 1 cookie

Tc= Total cost of the box cookies

N=Number of cookies in the box

We need to find the individual cost of each cookie. As you know, if we multiply the individual cost of each cookie by the total number of cookies in the box, we can find the total cost of the cookie box. So:

  (1)

Now, we know:

Replacing the data in (1)

Multiply both sides by 1/15

Hence, the individual cost of each cookie is:

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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rauschg

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step-by-step explanation: