Ateacher had 18 red pens. if the ratio of red pens to blue pens she owned was 3: 5 how many pens did she have total?

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Point a is at 12, and point d is at 56. point c is midway between a and d, and point b is midway between a and c. which of these is the coordinate of b?

Which statement best explains whether the table represents a linear or nonlinear function? input (x) output (y) 2 5 4 10 6 15 8 20 it is a linear function because the input values are increasing. it is a nonlinear function because the output values are increasing. it is a linear function because there is a constant rate of change in both the input and output. it is a nonlinear function because there is a constant rate of change in both the input and output.