The temperature at 7pm at a weather station in minnesota was -5 degrees f. the temperature began changing at a rate of -2.5 degrees f per hour. what was the temperature at 10 pm?

To answer this question, set up an equation that models the temperature every hour:

y=-2.5x-5

y is the temperature in Fahrenheit, -2.5 is hourly temperature change in Fahrenheit, x is the number of hours after 7 p.m., and -5 was the original temperature in Fahrenheit, at 7 p.m.

Now, to find the temperature at 10 p.m., calculate how many hours 10 p.m. is from 7 p.m. through subtraction:

10-7=3

You can plug 3 into the equation for x and then solve for y to get your final

y=-2.5(3)-5

y=-7.5-5

y=-12.5

The temperature at 10 p.m. was -12.5 degrees Fahrenheit.

Hope this helps!!

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

i dony know

step-by-step explanation: