7) Suppose the population of Detroit was 1.5 million in 1990 and 1.0 million in 2002. If the city is losing population exponentially, how many years after 2002 will its population be 0.5 million? You may use the equation P(t) = Po(). K is the number of years it takes for the population to become half of what it was. a) 16 b) 36 c) 18.5 d) 21.5 e) 20.5

You may use https://www.desmos.com/calculator to help with this question. O O O O O O (A) O (B) O Solve for x (round to 4 decimal places): 5 10 = 11 (A) 1 (B) 1.0820 (C) 0.0220 (D) 0.3424 (E) 0.2200 (D)

The population, P, of a small community can be modelled by the equation P = 29 000 (1.031), where t is the time in years after 2017. a) What was the population in 2017? b) What will the population be in 2025?

5. Assume food prices have risen about 4% per year for the last five years. a. If a gallon of milk cost $2 five years ago, what does it cost today? b. If a gallon of milk cost Sx five years ago, write an expression for its cost today. c. If a gallon of milk costs $3.50 now, what did it cost five years ago? Write and solve an equation to answer the question. Let x cost of a gallon of milk five years ago d. Ifmilk prices increase 4% per year for five years, what is the overall percent ncrease