Question

HELP!!

Answer 1

Answer: a) $25x+30y=221.25\\5x+45y=191.25$

b) Cost of a macadamia nut chip cookie is $33.93 and the cost of triple chocolate cookie. is $3.77

c) Elimination method because it enables us to eliminate one of the variables.

Step-by-step explanation:

Let x be the cost of macadamia nut chip cookie and y be the cost of triple chocolate cookie.

Then according to the question we have the following equations:-

$25x+30y=221.25..................(1)\\5x+45y=191.25.......................(2)$

Multiplying 5 on both sides of the equation (2), we get

$25x+225y=956.25$...............(3)

By using elimination method, subtract equation (1) from (3) we get

$195y=735\\\Rightarrow\ y=3.77$

Substitute the value of y in (2), we get

$5x+45(3.77)=191.25\\\Rightarrow\ 5x=191.25-169.65\\\Rightarrow\ x=33.93$

Answer 2

The answer to the question