Answer:
29
Step-by-step explanation:
You have to multiply whats outside the parenthesis with everything that is inside, so


Multiplication of same bases we sum the exponents



Alternative B.
2. rhombus
3. rectangle
4. parallelogram
5.trapezoid
6.quadrilateral
Answer:
answer = 21
Step-by-step explanation:
2n - 2 = 40
2n - 2 + 2 = 40 + 2
2n = 42
2n/2 = 42/2
n = 21