Page 523 - Algebra 1

Solve_.
*6. x -2≤1
*7.-3x+2≤1 (77)
9. -5 < r - 6 < -2 (73)
6 11. √ 40 0g
(61)
(77) -3
*8. _x - 4 > 9
(77) 5 Simplify.
10. 4√ 3x √ 4x (76)
*12. Generalize Describe how solving inequalities is different from solving equations. (77)
*13. Multiple Choice What is the solution to 6 - 7y < 48?
(77) A y < -6 B y > -6 C y > -48 D y < -48
*14. Hobbies Building ships in a bottle is Jeff’s favorite hobby. He has $42 to purchase (77) two ship kits and two bottles. Each ship kit is $18. To find how much he can spend
on each bottle, solve the inequality 2(18) + 2b ≤ 42.
15. BodySurfaceArea Physicianscanestimateth_ebodysurfaceareaofanadult
HW
(76) (in square meters) using the formula x = √ called BSA, where H is height in
3125
inches and W is weight is pounds. Find the BSA of a person who is √ 518 4 inches tall
and weighs √ 32 ,40 0 pounds. Round to the nearest whole number.
16. The brightness of a photograph is represented by the expression 12x2 - 2x - 4.
(75) Factor this expression completely.
17. ErrorAnalysis Students were asked to find the product of √ 75 · √ 2. Which student is
(76) correct? Explain the error.
*18. Multi-Step A tsunami is a big ocean wave that can be caused by underwater
(76) volcanic eruptions, earthquakes, or hurricanes. The equation S = √ g · d models
the speed of a tsunami, where g is the acceleration due to gravity, which is
9.8 meters/second2, and where d is the depth of the ocean in meters.
a. Suppose a tsunami begins in the ocean at a depth of 1000 meters. What is the
speed of the tsunami?
b. Suppose a tsunami begins in the ocean at a depth of 2000 meters. What is the speed of the tsunami?
*19. Geometry A triangle has a base of 3 + √ 15 inches and a height of 5 - √ 20 inches. (76) Find the area.
Student A
√ 75 · √ 2 √ 15 0
5 √ 6
Student B
√ 75 · √2 √ 15 0
5 √ 30
508 Saxon Algebra 1