In 1990, the population of Cheyenne, Wyoming, was 73,142. By 2000, the population had increased to 81,607. Write and solve an equation to find, the increase in Cheyenne’s population from 1990 to 2000.

Mercury’s surface temperature has a range of 600 digress. This range is the broadest of any planet in the solar system. Given that the lowest temperature on Mercury’s surface is _ 173 degree. Write and solve an equation to find the highest temperature.

increase = 81607 - 73142

max = -173 + 600

yes

To find the increase in Cheyenne's population from 1990 to 2000, we can subtract the population of Cheyenne in 1990 from the population in 2000.

Let's represent the population in 1990 as P₁, and the population in 2000 as P₂.

Equation: P₂ - P₁ = Increase in population from 1990 to 2000

Given:
P₁ = 73,142
P₂ = 81,607

Now we can substitute the values into the equation and solve:

81,607 - 73,142 = 8,465

Therefore, there was an increase of 8,465 in Cheyenne's population from 1990 to 2000.

Regarding the second question:

To find the highest temperature on Mercury's surface given that the lowest temperature is -173 degrees, we need to consider the temperature range.

Let's represent the highest temperature on Mercury as T and the lowest temperature as L.

Given:
L = -173

Equation: T - L = Temperature range

Since we know that the temperature range is 600 degrees, we can substitute the values into the equation and solve:

T - (-173) = 600

T + 173 = 600

T = 600 - 173

T = 427

Therefore, the highest temperature on Mercury's surface is 427 degrees.