Explanation
Correct answer: A.
Choice A is correct. It's given that the function gives the temperature, in degrees Fahrenheit, that corresponds to a temperature of kelvins. A temperature that increased by kelvins means that the value of increased by kelvins. It follows that an increase in by increases by , or . Therefore, if a temperature increased by kelvins, the temperature increased by degrees Fahrenheit.
Desmos solution:
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice B
Choice B is incorrect and may result from conceptual or calculation errors.
Choice C
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D
Choice D is incorrect and may result from conceptual or calculation errors.
Student discussion
hstreet2009 1 likes
viccereno_77 0 likes
I graphed the original equation and then a second equation that represents the increase in kelvin by adding 2.10 to x. Degrees Fahrenheit is the y-value in this situation, so the positive difference between the y-values of the two lines represents the temperature increase. I graphed a vertical line at the x-intercept of F(x) since the y-value is just 0. the line of G(x) had a y-value of 3.78, so the positive difference between the two y-values is 3.78, choice A.
camilamelo18 0 likes