Answer:
The expression is
The number of transistors in a dense integrated circuit in 1979 is
Step-by-step explanation:
we know that
The equation of a exponential growth function is equal to
where
y ----> is he number of transistors in a dense integrated circuit
x ----> is the number of years since year 1974
a ---> is the initial value or y-intercept
r ---> is the rate of change
In this problem we have
substitute
Find the number of transistors in a dense integrated circuit in 1979
we have that
x=1979-1974=5 years
substitute the value of x in the exponential equation
-----> the expression