Which of these systems of linear equations has an infinite number of solutions?

a. 3x-8y=21
6x-16y=46

b. 3x+6y=22
6x+12y=44

c. 5x+9y=2-
10x-14y=48

d. 5x-9y=20
10x+18y=40

Chamberlin wants to bottle 1\8 of her apple cider. she pours the apple cider evenly among 6 bottles. what fraction of her apple cider will she put in each bottle? what expression could represent this situation?

The graph shows the function f(x) = (2.5)x was horizontally translated left by a value of h to get the function g(x) = (2.5)x–h.

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers