Asmall rural town has experienced a population decrease at a rate of 25 people every 5 years since 1970. if the population of the town in 1970 was 250, which of the following equations represents the town’s population as a function of time? (assume 1970 is represented by x = 0, 1971 is represented by x = 1, and so on). a. y = –5x + 250 b. y = –25x + 250 c. –5x + y = 250 d. –x – 25y = 250

C is the correct option.

Step-by-step explanation:

y is the population and x is the year since 1970.

The population decreases at the rate of 25 people every 5 years since 1970

slope of a line = difference in y / difference in x (or rise / run) = -25 / 5

slope m = -5

when x = 0 (that is the year 1970), the population is 250.

x = 0 represents the y-intercept

Answer is C -5x+y=250

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

answer: 1inch=7days  

12inch=12*7=84days

step-by-step explanation: