SAT Pastpaper with Solutions

A biologist is studying the growth of a sunflower plant. The graph models the height y, in centimeters, of the sunflower plant after x weeks of observation.

According to the model, what is the estimated height, in centimeters, of the sunflower plant after 3 weeks of observation?

For a psychology class, a student's research paper needs to have no more than 5,000 words. If a student has already written 3,051 words, what is the maximum number of additional words the student can write for the research paper?

The table shows values of x and their corresponding values of y for three points on line j in the xy-plane.

Line k also lies in the xy-plane and is defined by the equation y = 4x. At what point (x,y) do lines j and k intersect?

The scatterplot shows the relationship between the square footage of 12 clothing stores and their annual sales, in millions of dollars. According to the trend shown by the data, which of the following is the best prediction for the annual sales, in millions of dollars, of a clothing store that is 4 thousand square feet?

In the given equation,k is a constant. The equation has exactly one real solution. What is the value of k?

A triathlon participant plans to complete the cycling event with an average speed of 28,512 yards per hour. What is this average speed in miles per hour? (1 mile = 1,760 yards)

For a project, Kayla recorded the heights of 17 people in her neighborhood. The histogram summarizes the heights, in inches (in), of these 17 people in Kayla's neighborhood. The first bar represents people with a height of at least 50 in but less than 53 in. The second bar represents people with a height of at least 53 in but less than 56 in, and so on.

How many of these 17 people in Kayla's neighborhood had a height of at least 50 in but less than 56 in?

The given expression is equivalent to c, where c is a constant and k > - 5. What is the value of c?

What is a positive solution to the given equation?

One of the two equations in a system of linear equations is given. The system has infinitely many solutions. If the second equation is y=mx+b,where m and b areconstants,what is the value of b?