Which of the following equations correctly represents the law of cosines? A. 2 = 22 + b2 - 2ab. cos(B)
B. 2 = 22 + c2 - 2ac. cos(C)
C. a2 = b2 + c2 - 2bc. cos(A)
D. b2 = 22 +62 - 2bc. cos(B)

D. b2 = 22 + 62-2bc.cos(B)

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.