Which equation, when graphed, has x-intercepts at (8,0) and (-2,0) and a y-intercept at (0, -48)? f(x) = -3(x - 3)(x + 2)
f(x) = -3(x + 8)(x - 2)
f(x) = 3(x - 3)(x + 2)
f(x) = 3(X + 8)(x - 2)

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Lena reflected this figure across the x-axis. she writes the vertices of the image as a'(−2, 8), b'(−5, 6), c'(−8, 8), d'(−4, 2).