If a + 4b = 33 and 6a + 3b = 51, what is the value of a + b? (i got 5 but it was wrong)

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

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