On a very cold morning, it was -7°f. as the day went on, the temperature rose 3 degrees each hour. which equation shows the temperature over time?

Step-by-step explanation:

Let x be the number of hours after morning.

We have been given that on a very cold morning, it was -7°F. As the day went on, the temperature rose 3 degrees each hour.

Since the slope-intercept form of an equation is: , where m represents slope and b represents y-intercept.

As the temperature is increasing 3 degrees with each passing hour, so slope of our line will be 3 as slope represents rate of change.

The initial temperature was -7°F, so -7 will be our y-intercept.

Upon substituting m=3 and b=-7 in slope intercept form of equation we will get,

Therefore, the equation shows the temperature over time.

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step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225