800 is 100% so 20 is 40% of 800.
Answer:

Step-by-step explanation:
can be broken down into three fractions, coefficients, powers of p, powers of q.

Simplify the first fraction, then simplify the others by subtracting numerator exponents minus denominator exponents.

Answer:
122
Step-by-step explanation:
(3)³ + 14(3²) - 7(3) - 10
122
Used remainder theorem
Answer: 
a=-3
b=-9
Step-by-step explanation:

B cause 13 plus x is equal to the 16 liters that u need and u already have 13 liters