An object is thrown into the air. The equation for the object's heights at time t seconds after launch is H(t) = -4.9t2 + 13.4t + 24.9, where H is in
meters.

What is the distance between point a and b

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x,y) coordinate plane?

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?