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Important Info: Be sure to have your calculator set to “DEG” or “Degree” mode when solving trig questions. Pythagorean Theorem: You are welcome to refer to the following acronym when solving trig questions:SOH CAH TOA

A 15 m tall tree casts a shadow that is 3.4 m long.  At the same time of day, another tree casts a shadow that is 5.2 m long.  Calculate the height of this tree.

The x-intercepts (zeroes) of y = x2 – 5x – 6 are (-6, 0) and (1, 0).

Which linear system has the solution x = 9 and y = -1?

Lead poisoning is no longer a problem for young children because there are very strict regulations regarding lead-based paint.

Mrs. Ghoulsby wants to use ELIMINATION to solve the system of equations below. Choose the best first step! 3x – y = 5 2x + 3y = 10

Ben’s work for solving this system of equations is shown below.  All his work is correct. Which method is he using? System:y = -5 – x 2x + y = 20 Ben’s solution:2x + (-5 – x) = 20 x – 5 = 20 x = 25 y = -5 – (25) y = -30

From the graph, the point of intersection of the two lines is:  

Points (5, -8) and (-3, -4) are on a line. The y-intercept is 6. What is the equation of the line? hint: find the slope “m” first using slope formula:  m = y2 – y1 / x2 – x1

Which linear system has the solution x = 2 and y = -4?