Solve the system of equations algebraically. show all of your steps.
y=x^2+2x
y=3x+20

Asquare parking lot has 6,400 square meters what is the length in meters

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?

The quadratic function h(t)=-16.1t^2+150 choose the graph representation