Page 611 - Algebra 1

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_2 Graph the function y = -x .
Multiply 2x-16 · 3y2 +3x. _ _2
6x2 3x - 24 Solve⎪n+3⎥+4=4.
Find the axis of symmetry for the graph of the equation y = -3x2 + 8x + 1. Add or subtract.
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596
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7x-2 y y
*12. 4y-5y (9 0) x 2x
A marine biologist netted a sample of wild sardines from the
Marine Biology
northern Pacific. In his analysis of the sample, the average length of an adult
male fish was 210 millimeters. He noted that the greatest variation in length from
the average length in the sample was ±33 millimeters. Write and solve an
absolute-value equation to find the lengths of the longest and shortest sardines
in the sample.
Multi-Step A student has grades 75 and 90 on his first two math tests. He wants
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solve the inequality 75 + 90 + x ≥ 80.
to have an average of at least 80 after his third test. To find what score he needs,
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Chess All the chess pieces are put in a bag and one is drawn randomly. There are 2 kings, 2 queens, 4 rooks, 4 bishops, 4 knights, and 16 pawns. Make a graph to show the probability distribution of the pieces.
Multi-Step Marisa is changing her dog’s food from a puppy formula to an adult formula. The vet recommended that she exchange 2 ounces of adult formula for
3 ounces of puppy formula each day. Her dog usually eats 20 ounces of food per day. After how many days will the dog’s daily diet include more adult formula than puppy formula?
a. Write and solve an inequality.
b. Explain the correct domain of the solution set. Write What does an AND inequality mean?
Coordinate Geometry Use the points (2, 2), (5, 2), and (2, -3). a. Write Explain why the triangle is a right triangle.
b. What are the lengths of the legs of the triangle?
c. Use the Pythagorean Theorem to find the length of the hypotenuse.
Astronomy Eli is looking at three stars on a star map. He measures and records the distances between each pair of stars: 9 centimeters, 12 centimeters, and
15 centimeters. Do the stars on the map determine a right triangle?
Multi-Step The area of a square is equal to x2 + 6x + 9. What is the side length of the square?
a. Write the formula for the area of a square.
b. Factor the area.
c. Set the expressions equal to each other.
d. Find the square root of each side. Saxon Algebra 1