ElectricPavlov

Largest value will be  y= 1    when x = 0

   as x goes to infinity this tends toward zero....    take it from here   

Find y-axis intercept (when x = 0)     y = 6

find x-axis intercepr Iwhen y= 0)       x = 6

Noy you have a right triangle with leg1 = 6    and leg2 = 6        area = 1/2 leg1 x leg2  units²

To be in Q I   it will need to be ABOVE the line drawn..... the x - point it will be midway between the two points

   x = 4

coordinate will be    4, y        and the distance from either of the given points will be 8

  use distance formula from  0,5  (easiest)   and    4,y    to find the distance 8

8^2 = (4-0)^2 + (y-5)^2        solve for y

Plane B flies   30 min + 10 min     + 20 km    @ 240 km/60 min

40 min * 240 km/60min + 20 km = 180 km           .....as guest found ! 

Please proof read your question....it really states that the more your income, the more your take home pay.  

a-b = 40     so   b = a-40

then     a      +   a-40     + 50      = 180        solve for 'a'

Similar triangles:

QD = 19.2/32  * 15 

then

QD + 15 = BD

Add 5 to both sides

2|x-3| = 12

|x-3| =6

Now you have to evaluate    x-3 = 6       and   x-3 = -6

                                                 x = 9                x = -3           Just as W1000 found !

Top part  :    5 x 10 x 12  cm³

Bottom part      5 x 12 x10 cm³         Add together......

Original price = 35       50% off price = 17.50

She buys TWO @ 35   and TWO at 17.50

   add these amounts together ....then multiply by 1.065 (tax) to get the final total.....