Dequan is making homemade ice cream which needs to be frozen gradually to achieve the best texture. When he starts, the temperature of the ice cream is 50°F. The temperature drops 5°F each hour for the next 3 hours. Dequan then puts it in a deep freezer causing the temperature to drop 13°F. Which integer best represents the change in the temperature of the ice cream from start to finish? -28°F -28°F -13°F -13°F 13°F 13°F 28°F

The change in the temperature of the ice cream from start to finish is -28°F

Step-by-step explanation:

From the question,

Initial temperature of the ice cream is 50°F.

Also, the temperature drops 5°F each hour for the next 3 hours; that is for every hour in the next 3 hours, the initial temperature decreases by 5°F.

Then after 3 hours, the initial temperature would have decreased by 3 × 5°F;

3 × 5°F = 15°F

Hence, after 3 hours, the temperature of the ice cream would be 50°F -15°F;

50°F - 15°F = 35°F

After 3 hours, the temperature of the ice cream would be 35°F.

From the question,

Dequan then puts it in a deep freezer causing the temperature to drop 13°F

Now, the final temperature of the ice cream is 35°F - 13°F = 22°F

The final temperature of the ice cream is 22°F.

To determine the change in the temperature of the ice cream from start to finish,

Change in temperature = Final temperature - Initial temperature

Change in temperature = 22°F - 50°F = -28°F

Hence, the change in the temperature of the ice cream from start to finish is -28°F.

x=30

step-by-step explanation:

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?