Order of operations is known as PIMDAS P(Parenthasis) I(Integers) M(Multiplication or Division which ever comes first) (A) (S)Addition and subtraction are last same rule. Whichever one comes first after all other higher steps are acheived.
4 x 10^12 is 4000000000000 in scientific notation. The decimal needed to move 12 places to the left.
The answer is c, -1 or -7
Hope this helped :)
Your approach is the ideal approach...
<span>the bone of contention here is the value of T... </span>
<span>it simply depends on the definition given... some people use 360, others use 365... so it depends on which style your class (or book) uses... </span>