1) Since January 1980, the population of the city of Brownville has grown according to the mathematical model y = 720,500(1.022), where x is the number of years since January 1980.
a) Explain what the numbers 720,500 and 1.022 represent in this model.
b) What would the population be in 2000 if the growth continues at the same rate.
c) Use this model to predict about when the population of Brownville will first reach 1,000,000.

d is correct

step-by-step explanation:

y = i/2 xtnop + (3i/2 tnop+ 1)

step-by-step explanation:

the picture is the step by step explanation.

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)