Simplify -1.5( -3.6+ 2)

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?