PLEASE HELP I WILL GIVE BRAINLIEST Part A: Sydney made $18.50 selling lemonade, by the cup, at her yard sale. She sold each cup for $0.50 and received a $3 tip from a neighbor. Write an equation to represent this situation. (4 points)

Part B: Daria made a profit of $21.00 selling lemonade. She sold her lemonade for $0.75 per cup, received a tip of $3 from a neighbor, but also had to buy each plastic cup she used for $0.10 per cup. Write an equation to represent this situation. (4 points)

Part C: Explain how the equations from Part A and Part B differ. (2 points)

Sydney's equation is:

Dara equation is:

Step-by-step explanation:

Part A:

Let "s" be the number of cups of lemonade Sydney sold, and if she sold each cup for $0.50 and also received a tip of $3, earning a total of $18.50.

Part B:

Let "d" be the number of cups of lemonade Daria sold, and if she sold each cup for $0.75 and also had to pay $0.10 for the plastic cup, then her earning from lemonade are . Add to that a $3 tip and Daria's earnings are $21.00; therefore,

Part C:

Equation In part A differs from Part B in that in A the profit made is lower than in B, and in A the lemonade is cheaper than in B.

not sure but it may be b, as i said i'm not sure.