Answer:
a = 4, b = 5
Explanation:
Given the exponential function
f(x) = a
Use the given points to find a and b
Using (0, 4 ) , then
4 = a ( = 1 ) , thus
a = 4 , so
f(x) = 4
Using (1, 20 ) , then
20 = 4b ( divide both sides by 4 )
b = 5
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