Answer: a) 
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:-

Multiplying 5 on both sides of the equation (2), we get
...............(3)
By using elimination method, subtract equation (1) from (3) we get

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

Multiply both the top and bottom by 8 8/9=64/72
multiply both the top and bottom by 9 1/8=9/72
9 goes fully into in to 63 7 times
7 is your answer.
Answer:
a) reflection across the x-axis, shift 8 units left
b) vertical stretch of 2, reflection across the y-axis, shift up 1
Step-by-step explanation:
The negative sign outside the square root represents a reflection across the x-axis, and the +8 inside represents a shift 8 to the left
The 2 outside the square root represents a vertical stretch of 2, and the negative sign inside the square root represents a reflection across the y-axis. The +1 at the end represents a shift up 1
Pls do your own homework this app is the help people when they’re confused not to do they’re homework for them
2v + 7 = 3
subtract 7 from both sides
2v = -4
divide both sides by 2 to isolate the variable
v = -2
to check:
2(-2) + 7 =?= 3
-4 + 7 =?= 3
3 = 3
✅
Hope this helps :)