In 2012, a retail chain of fast food rstaurant has 68 restaurants in California an started to expand nationally by adding 9 new restaurants each year thereafter. At this rate, which of the following functions f represents the number of restaurants there will be in this retail chain n years after 2012 assuming none of these restaurants close?

The yearly growth in the number of fast food restaurants by the function f(n)=5+8n. According to this model which statement is true?

The breakdown of a sample of a chemical compounds is represented by the function p(n)=300(0.5)^(n) , where p(n) represents the number of millligrams of the substance that remains at the end of n years. Which of the following is true? I. 300 represents the number of milligrams of the substance that remains after the first year. II. 0.5 represents the fraction of the starting amount by which the substance gets reduced by the end of each year. III. Each year the substance gets reduced by one-half of 300.

Thomas was hired for a new job in 1977, with a starting salary of $40,000 . Beginning in 1978, Thomas received an annual rise, increasing his salary by $2,300 each year. Which of the following graphs could represent Thomas' s salary, S, in dollars, as a function of the number of years,y, after 1977?