Anumber multiplied by -7, subtracted drom the sum of 7 and five times athe number

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

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2