Answer:

Step-by-step explanation:

State that the values where cos x is minimum:






Answer:
Problem 1:
x=12, x=3, x=6
Problem 2:
18*3=54
54/18=3
Problem 3:
Part A: 36/4.5=? 4.5*x=36
Part B: 8
Step-by-step explanation:
Trial and error on this one try each pair till you find negative slopes
C and D
The answer is probably 50 ok