Gevaluate the integral below by changing to spherical coordinates. 3 −3 9 − y2 − 9 − y2 9 − x2 − y2 x2z y2z z3 dz dx dy − 9 − x2 − y2

My best guess as to what the integral is supposed to be is

which is the integral over the sphere of radius 3 centered at (0, 0, 0). In spherical coordinates, the integral is equivalent to

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2