Which function is represented in the graph

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

X+ y = 5 ; x - y =3 solve using linear combination