Answer:
Option C
Step-by-step explanation:

Lets convert it into improper fraction.

Lets convert
into a mixed fraction.

Rounding off 7.04 gives 7 and rounding 7 further gives 10.
So , the estimate of the product is 10
Answer:
answer is B...2 1/2
Step-by-step explanation:
Notice the table of values, thus let's pick two points from it, to check what the slope may be,

Answer:
using Gaussian elimination method of matrix
-7, |-2|, 3, 4.5 I did this earlier