John got 20% discount at a sale. he got a new shirt for $12. what was the original price of the shirt?

a.)$18
b.)$16
c.)$20
d.)$15

Ernest is purchasing a $175,000 home with a 30-year mortgage. he will make a $15,000 down payment. use the table below to find his monthly pmi payment.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Prove that quadrilateral is a rhombus.