`M=1,800 (1.02)^t`
The equation above models the number of members, M, of a gym t years after the gym opens. Of the following, which equation models the number of members of the gym q quarter years after the gym opens?

Keith modeled the growth over several hundred years of a tree population by estimating the number of the trees’ pollen grains per square centimeter that were deposited each year within layers of a lake’s sediment. He estimated there were 310 pollen grains per square centimeter the first year the grains were deposited, with a 1% annual increase in the number of grains per square centimeter thereafter. Which of the following functions models P(t), the number of pollen grains per square centimeter t years after the first year the grains were deposited?

The population, p of a town can be modeled by the equation P=750(1.15)^(d) , where d is the number of decades after the year 1980. Which of the following equations can be used to model the population of the town y years after 1980?

The graph above shows the size of a certain population after time t. Which of the following equations correctly shows y as a function of t ?

A photocopy machine is initially loaded with 5,000 sheets of paper. The machine starts a large job and copies at a constant rate. After 20 minutes, it has used 30% of the paper. Which of the following equations models the number of sheets of paper, p, remaining in the machine m minutes after the machine started printing?

A marketing team conducted a study on the use of smartphones. In a certain metropolitan area, there were 1.6 million smartphone users at the end of 2018. The marketing team predicted that the number of smartphone users would increase by 35 percent each year beginning in 2019. If y represents the number of smartphone users in this metropolitan area after x years, then which of the following equations best models the number of smartphone users in this area over time ?

A company purchased a machine valued at $120,000. The value of the machine depreciates by the same amount each year so that after 10 years the value will be $30,000. Which of the following equations gives the value, v, of the machine, in dollars, t years after it was purchased for 0 le t le 10 ?

The table above shows the distribution of the number of push ups completed by 30 people in a high school gym class. Which of the following is true the mean, mode, and the range of the numbers of push ups completed?

T=25+3c The equation above is used to model the number of chirps, c, made by a certain species of cricket in one minute, and the temperature, T, in degrees Fahrenheit. According to this model, what is the meaning of the number 3 in the equation.