The measure of angle 1 is 30°, and the measure of angle 2 is 110°. A triangle has angles 1, 2, 3. The exterior angle to angle 3 is 4. What is the measure of angle 4? 40° 80° 140° 220°

The $x$-intercepts of the parabola $y = x^2 + bx + c$ are $(-3,0)$ and $(5,0).$ find the equation of the parabola, and submit your answer in $y = ax^2 + bx + c$ form.

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

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