Nina says the equation 600 = 12x50 means 600 is 12 times as many as 50. julio says the equation means 600 is 50 times as many as 12. who is correct? explain

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

Ihave trouble finding the nth term of a linear sequence

Ineed me i stuck and i don’t want to get it wrong