Page 418 - Algebra 1

18. Multiple Choice Which point is a solution of to the linear system? (59)
y - 5x = 3 3x + 8y = 24
A (1, 8) B (0, 0) C (0, 3) *19. Write Explain how to simplify √ 18 a2, a ≥ 0.
D (4, 1.5)
(61)
*20. Geometry A triangle has a length of (x - 4) inches and a height of (x + 4) inches.
(60) What is the area of the triangle?
21. Analyze What polynomial can be added to x2 + 5x + 1 to get a sum of 4x2 - 3?
(53)
Find the LCM. 22. 21, 33, 13
(57)
23. 8, 32, 12 (57)
*24. Multi-Step Laura is building on to her new pool house. Write an expression for the
(60)
x
x
3
area of the non-shaded region. Find the area. a. Find the area of the large square.
b. Find the area of the smaller square.
c. Write an expression for the area of the non-shaded region.
3
3 4
*25. Measurement Alan is building a square patio. He wants an 8-inch-wide border (60) of flowers around his patio, and the total length of one side is 8x. Write a
polynomial that represents the area of the floor of the patio not including the border of flowers.
*26. Multi-Step The area of a circle is 20π cm2. How long is the radius?
(61) a. Write an expression that can be used to find the length of the radius
of a circle if given the area, A.
b. Use the expression to find the length of the radius.
28. 3g-4<-2 (45)
path radius of the circle. What is the tangential velocity of an object with a path radius of 15 cm and a centripetal acceleration of 60 cm/s2?
30. Make a box-and-whisker plot of the data below and title it “Shoe Sizes.” (54)
5, 10, 6, 7, 6.5, 7, 7, 8.5, 6.5, 8, 9, 7.5, 7
Translate each inequality into a sentence. 27. _n +3≥5
(45) 7
*29. Circular Motion
The tangential velocity of an object in circular motion can be
(61) found using the expression√ar, where a is the centripetal acceleration and r is the

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