Answer:
n+7
Step-by-step explanation:
Sum means add, so it's just n added to 7:
n+7 :)
Answer:

Step-by-step explanation:
Recall the formula for the sine of the double angle:

we know that
, and that
is in the interval between 0 and 90 degrees, where both the functions sine and cosine are non-negative numbers. Based on such, we can find using the Pythagorean trigonometric property that relates sine and cosine of the same angle, what
is:

With this information, we can now complete the value of the sine of the double angle requested:

Well, it cant be option B because then it wuld be half the time (180 mins.)
It cant be option D becasue then it would be over 360 mins, seeing that it only took 8 mins to type 360
And it cant be option C beacuse it would be too small, if 4 mins is to small then 3 mins is worse
Your answer would be A 5 minutes it's just a little bit above 4 mins(half)