1.
Keith has $500 in a savings account at the beginning of the summer. He withdraws $25 per week for food, clothing, and movie tickets. What is the rate of change (slope)?
A
-25
B
-500
C
25
2.
A taxi charges a flat amount of $1.75, plus an additional $0.65 per mile. What is the rate of change (slope)?
A
0.65
B
65
C
-1.75
3.
Chris wants to order DVDs over the internet. Each DVD costs $15.99 and shipping the entire order costs $9.99. If he can spend no more than $100, which inequality models Chris’s dilemma?
A
100 ≥ 15.99d + 9.99
B
100 ≤ 15.99d + 9.99
C
100 < 15.99d + 9.99
4.
Allison practices her violin for at least 12 hours per week. She practices for 3/4 of an hour each session. If she has already practiced 3 hours this week, how many more sessions remain for her to meet or exceed her weekly practice goal?
A
12 ≤ 3/4s + 3
B
12 < 3/4s + 3
C
3 ≤ 3/4s +12
5.
Pet Supplies makes a profit of $5.50 per bag on its line of natural dog food. If the store wants to make a profit of no less than $5225, how many bags of dog food does it need to sell?
