Bryan has a collection of baseball cards which he shares equally with his brother, Jude. Bryan also received two cards from his friend, Gene. If Bryan has 8 baseball cards now, how many cards did he originally have in his collection?

Ihonestly don’t understand this at all

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?