This year cornell's class took one more than three times as many field trips as last year's class. this year, cornell's class took a total of 7 trips. how many fields trips did bis class take last tera

Right ∆abc has coordinates a(-7, 3), b( -7, 10), and c(-1, 3). the triangle is reflected over the x - axis and then reflected again over the y - axis to create ∆a'b'c'. which are the coordinates of vertex a'?