Use the vertex form, y = a ( x − h ) 2 + k y = a ( x - h ) 2 + k , to determine the values of a a , h h , and k k . a = − 1 2 a = - 1 2 h = − 3 h = - 3 k = − 1 k = - 1 Find the vertex ( h , k ) ( h , k ) . ( − 3 , − 1 )
If you multiply 120 to 3.5% but in decimal form which is 0.035 you’ll get 4.2 and then add the 4.2 and 120 together and you get your answer with is $124.20