You return several shirts to a store. the receipt shows that the amount placed back on your credit card is − $30.60. each shirt is − $6.12. how many shirts did you return?

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

Prove that 16^4-2^13-4^5 is divisible by 11.