I don’t know if the website is wrong but I keep getting y=25 is that answer right or am I wrong if so help me pls

How do you determine if an ordered pair is a solution to a given equation?

Statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?

Suppose jose bars 4 pounds of sausage that cost $8.79 per pound a bottle of mustard that cost $1.38 and two loaves of cuban bread that cost $3.99 each how much did jose spend in all