When you are rounding to the nearest tenth, you only look at the number right to the tenths which in this case is 5, so you round up the 6 to a 7, which will be.
8.7
Step-by-step explanation:

Hi...the answer is b.. I would recommend plot graph and find the gradient.... then use the point formula
Answer:
A,C, F
Step-by-step explanation:
y> 7 so,
eliminating B,D and E
now, for A, 2×1 < 9
for C, 2×-1<10
for F, 2× 17< 59