Systems of equations substitution 4x-4y=0 y=2x+6

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?