How do i describe what each variable and parameter means in an exponential equation
y=a(b)x

A general exponential equation is written as:

y = a*(b)^x

Where:

y represents the amount of something as a function of the variable x, where x is an independent variable.

a is the initial amount, this is, the value of y when x = 0.

b is the rate of growth, this defines how much changes the value of y as x increases.

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.