Is the relationship proportional or not. The weight of a stack of different sized books vs. The number of books in the stack

5x−4≥12 or 12x+5≤−4 can you with this problem

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f