Multiplicasion, que me da 32​

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)