University:
Winston-Salem Forsyth County Schools
Course:
AP Calculus AB
Academic year:

2013
Views:

268

Pages:

4
Author:

estorrii16i

Name: Class: _ Date: _ Suppose that a participant in a 30-K run/walk event could run at a pace of about 10 kilometers per hour and walk at a pace of about 6 kilometers per hour. Write an equation that relates y and y to the goal of covering 30 kilometers. ho walked lox +ley = 30 b) Find three pairs of solutions to your equation above; then graph the solutions below. (3,0) (1.5,2.5) (0,5) 30-K Run/Walk Number of Hours Walking orrey =30 10 Number of Hours Running c) Based on one of your ordcred pairs, how does it relate to the situation? The participat en and walk 3 hrs ntra-geable. 2. The Plano Texans are a youth marching band that competes with other groups all over the country. The band director rents instruments to members. Each trumpet rents for $10 per month and each drum rents for $5 per month. Write an equation that relates the trumpet and drum rentals if the band director charges $115 in rental fees. : += # of trupet rentals. da #of chom rentechs 10t + 50 = 115 Which of the situations below is accurate: The band director renting out 9 trumpets and 7 drums or 7 trumpets and 9 drums. Justify your answer. 10(9)+5(7)? 115 or 10(7)+5(4)? 115 90+35? 115 70 + 45 ? 115 125 # 115 NO 1152115/ So they rented at 7 rumpets 59 drus. Spiral: 3. The cost of a school banquet is $125 plus $20 for each person who attends. a) Write a function rule to show how the cost of the banquet depends on the number of people who attend. bet: c = cost p= #ot ppl C=20pt 125 b) What is the cost for 70 people? C=20(70)+125 =1400+125 -$1525 4. Write a linear function for the graph. What does the slope and the y-intercept represent in the situation? 950 900 Y=25x+800 ( Caterer's Charges ($) 850 25 800 Y= Charges x= # of guest the caterer charges an intal foe of $800 plus $25 per pers. 3 0 2 4 6 Number of Guests 5. Write a function rule for the data in the table. Input 12 4 5 Output 9 15 18 21 -3 3 12 3 2 1 Y=3x+6