- I have decided to give everyone another day to complete and correct this homework assignment. Finish as much as you can for tomorrow and try your best.
- Set these problems up algebraically, but you can use the graphing calculator to solve get the equation and check your answers.
ANSWERS to HW (page 210-214 #2, 4, 6)
#2: a) x = time after you pull the plug and y = #liters remaining so equation y = 2.4x^2 - 24x + 60
b) 60 Liters
c) 5minutes
d) 0L, yes, reasonable
e) See the graphing calc.
f) explain why this is not a linear function
#4) a) y = 0.01x^2 - x + 37: make sure your y values are #cents/kilometer
and x values are # of kilometers per hour (or speed)
b) $1.12/km or 112cents/km
c) between 40 and 60 km/hour
d) No
e) 50km/hr
#6) a) d = -16t^2 + 40t + 4
b) (1.25, 29): maximum altitude was 29ft, 1.25 seconds after the kick
c) t = 2.6 sec or -0.1sec (out of the domain)
#2: a) x = time and y = #liters remaining so equation y = 2.4x^2 - 24x + 60
b) 60 Liters
c) 5minutes
d) 0L, yes, reasonable
#4) a) y = 0.01x^2 - x + 37: make sure your your y values are #cents/kilometer
and x values are # of kilometers per hour (or speed)
b) $1.12/km or 112cents/km
c) between 40 and 60 km/hour
d) No
e) 50km/hr
#6) a) d = -16t^2 + 40t + 4
b) (1.25, 29): maximum altitude was 29ft, 1.25 seconds after the kick
c) t = 2.6 sec or -0.1sec (out of the domain)
- Set these problems up algebraically, but you can use the graphing calculator to solve get the equation and check your answers.
ANSWERS to HW (page 210-214 #2, 4, 6)
#2: a) x = time after you pull the plug and y = #liters remaining so equation y = 2.4x^2 - 24x + 60
b) 60 Liters
c) 5minutes
d) 0L, yes, reasonable
e) See the graphing calc.
f) explain why this is not a linear function
#4) a) y = 0.01x^2 - x + 37: make sure your y values are #cents/kilometer
and x values are # of kilometers per hour (or speed)
b) $1.12/km or 112cents/km
c) between 40 and 60 km/hour
d) No
e) 50km/hr
#6) a) d = -16t^2 + 40t + 4
b) (1.25, 29): maximum altitude was 29ft, 1.25 seconds after the kick
c) t = 2.6 sec or -0.1sec (out of the domain)
#2: a) x = time and y = #liters remaining so equation y = 2.4x^2 - 24x + 60
b) 60 Liters
c) 5minutes
d) 0L, yes, reasonable
#4) a) y = 0.01x^2 - x + 37: make sure your your y values are #cents/kilometer
and x values are # of kilometers per hour (or speed)
b) $1.12/km or 112cents/km
c) between 40 and 60 km/hour
d) No
e) 50km/hr
#6) a) d = -16t^2 + 40t + 4
b) (1.25, 29): maximum altitude was 29ft, 1.25 seconds after the kick
c) t = 2.6 sec or -0.1sec (out of the domain)