Page 216 - Algebra 1

Practice Distributed and Integrated
Simplify.
Solve.
3. 9x-2=2x+12
(28)
5. 2y+3=3(y+7) (28)
*1.y 5 (32) y
*2. -2 4 -6 (32) m p q
0 y6 m3p2q10 __
*4. 3y-y+2y-5=7-2y+5 (28)
6. 5(r-1)=2(r-4)-6 (28)
*7. Geometry Express the ratio of the area of the circle to the area of the square. (32)
8. The sum of twice a number and 17 is 55. Find the number. (17)
*9. Error Analysis Two students solved the proportion _3 = _x . Which student is correct? (31) Explain the error. 8 4
*10. Health The circle graph shows the prevalence of all listed types of allergies among (27) people who suffer from allergies. What about the graph may lead someone to an
Student A
_3 = _x 84 3·x=8·4
x = 10 _2 3
Student B
_3 = _x 84 8·x=3·4
x = 1 _1 2
inaccurate conclusion?
Latex 4% Food and Drug 6%
Skin 7%
2x
Allergy Prevalence
Eye 4% Insect 4%
Indoor and Outdoor 75%
11. Write Why is it best to combine like terms in an equation, such as
(26) 3n + 9 - 2n = 6 - 2n + 12, before attempting to isolate the variable?
12. Verify Is n = 9 a solution for -28 = -4n + 8? Explain. If false, provide a correct (23) solution and check.
Lesson 32 201