A
B
C
D
Explanation
Correct answer: C.
Choice C is correct. Subtracting from both sides of the given equation yields , or . Therefore, the value of is .
Desmos solution:
Note: The regression on the blue line solves for t, which is the value of x+4.
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice A
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B
Choice B is incorrect. This is the value of , not .
Choice D
Choice D is incorrect and may result from conceptual or calculation errors.