Ralph sold brownies for $0.18 a piece in order to earn money to buy baseball cards. if the cards cost $0.36 per pack, and if ralph had no money left over after buying them, what is the least number of brownies he must have sold?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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.