Answer:
110.30
Step-by-step explanation:
125.99-(125.99X0.15)= 107.09
107.09+(107.09X0.03)= 110.30
Answer: 2.5 minutes
Step-by-step explanation: First convert feet to miles. There's 5280 feet in 1 mile, so 3300/5280=0.625 miles. Then find out how long in hours it takes to travel that far. It travels 15 miles an hour, so 0.625/15=0.0417 hours. Then convert hours to minutes by multiplying by 60. 0.0417*60=2.5 minutes.
The easiest ways is to use the quadratic formula that is:
x' = [-b+√(b² - 4ac)]/2a and x" = [-b -√(b² - 4ac)]/2a
Solving : 2x² + 5x - 11 = 0, gives:
x' = [-5+√(25 - 4(2)(-11)]/4 and x" = [-5-√(25 - 4(2)(-11)]/4
x' = (-5+√113)/4 & x" = (-5-√113)/4