F(13) means x equals 13.
Replace x in the equation with 13 and solve:
-13 + 3 = -10
F(13) = -10
Add the 28 and 42
then divide by 2
there should be 35 kids in group
so 253 doubles is 506, 506 divided by two = 253
therefore the answer will be '' 506 divided by 2 = 253''
The correct answer is D (80,-30)
Answer:
I hope you have options. and if you can find these answers in the options it will be good. cos I'm not so sure
11. 9
12. 8.6 or 9 approximately
13. 56 degree
14. 33 degree
