Enrollment in a school has grown exponentially since the school opened. a graph depicting this growth is shown. determine the percentage rate of growth.

enrollment in a school has grown exponentially since the school opened. a graph depicting this growth is shown. determine the percentage rate of growth.

an exponential graph has time in years on the x axis and enrollments on the y axis. a curve that rises from left to right begins at zero comma thirty and passes through twenty comma eighty.

a. 0.6%
b. 6%
c. 0.06%
d. 1.06%

9514 1404 393

  B.  6%

Step-by-step explanation:

The enrollment increases by a factor of 80/30 in 20 years, so the growth factor per year is ...

  (8/3)^(1/20) ≈ 1.0503 = 1 + 5.03% = 1 + growth rate

The growth rate according to the description of the graph is 5.03% per year. The closest answer choice is ...

  B.  6%

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