Answer:
a. Elena donates 12% of her money
Step-by-step explanation:
Each person will pay $7 before taxes and tip.
Step-by-step explanation:
Price of salad = $4
Price of two salads = 4*2 =$8
Price of sandwich = $6
As 4 friends ordered sandwiches, therefore,
Price of 4 sandwiches = 6*4 = $24
Price of slice of cake = $3
Total = 2 salads + 4 sandwiches + 1 slice of cake


5 friends will split the bill evenly, therefore,
Bill for one person = 
Bill for one person = 
Each person will pay $7 before taxes and tip.
Keywords: addition, division
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A 225 degree angle is equal to 3.92699 radians, but you can round that off to 3.93
Solve:
(3x-2)^2-4x(2x-3)>=0
(3x-2)(3x-2)-8x^2+12x>=0
9x^2-12x+4-8x^2+12x>=0
The solution: x^2+4>=0
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