Pls don’t right a random answer because last time i used this i made a 35 so pls pls

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

What is the equation of the graph below? y=sec(x)-4

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.