Write an exponential function in the form y=ab^xy=ab^x that goes through points (0, 20) and (3, 1280).

y = 20

Step-by-step explanation:

Use the points to find the values of a and b

Using (0, 20 ) , then

20 = a [ = 1 ] , then

20 = a

y = 20

Using (3, 1280 ) , then

1280 = 20 b³ ( divide both sides by 20 )

64 = b³ ( take the cube root of both sides )

= b , that is

4 = b

Then exponential function is

y = 20.

72 is the answer to this problem

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers