Dwayne opens a savings account. He makes the same deposit every month and makes no withdrawals. After 3 months, he has $150. After 6 months, he has $300. After 9 months, he has $450 dollars. What is the rate of change?​

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)

the answer to this is a. a^2 + b^2 = c^2

apex says the answer is true

yes, i think so although i am not sure. this is a very strange question.