Real World Example Functions.

Smart phone sales since 1990

A. Linear

B. Quadratic

C. Exponential

Half life of a pesticide

A. Linear

B. Quadratic

C. Exponential

Smart phone sales since 1990:- linear function

Half life of a pesticide :- exponential function

Step-by-step explanation:

Linear function can be applicable in almost any situation where there is an unknown quantity can be represented by a linear equation, like figuring out income over time, calculating mileage rates, or predicting profit, therefore smart phone sales since 1990 can be model with linear function

Exponential functions can be applicable in social, scientific, or personal finance situations such as population growth, radioactive decay and half life, therefore half life of pesticide can be model with exponential function.

answer: d. $20

step-by-step explanation:

just took the test

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this