Which of the following is the algebraic expression that best describes the height y, if x is the width?

it's a graph with the points
(0.5, 1.5)
(2, 6)
(3, 9)
(5, 15)

the answer choices are
a. y=x+3
b. y=3x

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height