Charlie uses the function f(x) = 2x2 + 5x + 3 to track the temperature of a substance, where x represents the time. When you eva

Question

2 years ago

6

Charlie uses the function f(x) = 2x2 + 5x + 3 to track the temperature of a substance, where x represents the time. When you eva

luate f(5) you find that the temperature of the substance is 78°C. What is the domain of the situation of Charlie's quadratic function?
A)
all real numbers

B)
all real numbers less than zero

C)
all real numbers greater than 1

D)
all real numbers greater than zero

Geography

1 answer:

vodomira [7] · Answer 1 · 2022-08-30T13:38:05+03:00

vodomira [7]2 years ago

6 0

THE ANSWER IS D.
The domain of the Charlie's function is all<span> real numbers greater than zero</span>. The function alone would have a domain of all real numbers. In the situation given, time cannot be negative, and therefore, cannot be a part of the domain.