In order to mix mortar, water, sand, and cement mix must be mixed in the ratio of a: b: c respectively. If Herschel uses 3b pounds of sand to make the mortar for a brick wall that he is building, how many
pounds of mortar will he end up with in all?

For the function, f(x) = -5x 2, find f(-4).

100 points, hi, i’m not sure how to get the equation from the graph and table.

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.