We need the exponents law

So if
a=3
b=1/2
then

where x represent every half a year.
1) Striangle = 1/2 * (12-8) * 4 = 1/2 * 4 * 4 = 8 km^2
2) Srectangle = 4 * 8 = 32 km^2
3) Sfigure = 8 + 32 = 40 km^2
Number C
This can be done algebraically:
300*x=330 Where x is the multiplier
Therefore x=330/300=1.1
To find a percentage of a number you multiply by the percentage divided by 100.
So 330 is 110% of 300, which is an increase of 10%.
Answer:
27
Step-by-step explanation:
14 because 2 people=13 problems in an hour
91/13=7
7times 2 is 14
14 IS YOUR ANSER PLS MARK ME BRAINLIEST :D