Froggy Jumps Rate of Change ChallengeOnline version Test your knowledge on rate of change word problems with this fun quiz! by Kristine Vester 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? a Number of bags sold ≥ 950 b Number of bags sold ≤ 28737.5 c Number of bags sold > 950