So that AM:MB = 3:2 and N is the midpoint of CM

If the area of △CNB is 35 in2, find the area of △CMB, △AMC, and △ABC.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

The radius of the circle below intersects the unit circle at (3/5,4/5). what is the approximate value of theta? 0.6 radians 1.0 radians 36.9 degrees 53.1 degrees