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)

See explanation.

Step-by-step explanation:

Part A:

Let be the number of cups of lemonade Sydney sold, and if she sold each cup for $0.5 and also received a tip of $3, earning a total of $18.5

Part B:

Let 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.

its d. the first coordintaes are 10,32

step-by-step explanation:

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)