Answer:
16
Step-by-step explanation:
Plug things in then use PEMDAS:
m * (7+9) * n
= 0.5 * (7+9) * 2
= 0.5 * 16 * 2
= 16
Somebody can estimate the length of a book by using a ruler and rounding it to the nearest whole number.
3.45. All you have to do is divide 10.35 by 3.
