1. Practice 2015 – Domain 3 Expressions/Equations
Milestone
Practice 2015 – Domain 3
Expressions/Equations

2. Domain 3 – Expressions/Equations
Brad sold 5 times as many raffle tickets as Doug. They sold 120 raffle tickets in all. Which equation can be used to find how many tickets, t, Doug sold?
5t + t =120
5t - t = 120
5t = 120
t/5 = 120
Julia walked 8% more miles this week than Andy walked. If Andy walked m miles, which expression represents how far Julia walked?
.08m
0.8m
1.08m
1.8m

3. Domain 3 – Expressions/Equations
What is the difference?
3 + 5r – (2r – 5)
3r – 2
3r + 8
8r – 3
8r + 3
9. Tanner has a budgeted no more than $20 a month for entertainment and an additional $15 for possible one-time fees. If Tanner has $155 to use for entertainment, what is the greatest number of months, m, he budgeted for? Write and solve an inequality to represent the situation.

4. Domain 3 – Expressions/Equations
10. Marissa bought 3 sweaters on sale for the same price. After using a coupon for $25, the total cost was $80.
Write an algebraic equation to represent the situation.
How much did each sweater cost? Show your work and explain your thinking.

5. Mixed Reivew
Milestone 2015

6. 4. A zoo wanted to know which animal exhibit is liked the most by children under 12 years of age. One day, zoo officials surveyed every 20th person leaving the zoo and asked them to name their favorite animal exhibit. Of the people surveyed, 73% reported that the elephant habitat was their favorite exhibit. The zoo officials concluded that children under 12 years of age like the elephant habitat the most.
Part A: Describe the sample for this survey.
Part B: If 560 visitors were at the zoo on the day of the survey, what was the sample size for the survey?
Part C: Was the survey random? Explain your answer.
Part D: Explain why the zoo's conclusion is invalid.