Answer:
Distributive
Step-by-step explanation:
3(x + 5) = 7x - 13 given
3x + 15 = 7x - 13 distribute
- 3x -3x Subtraction property of equality
15= 7x - 13
+13 +13 Addition property of equality
28 = 7x
7 7 division property of equality
4=x simplify
x=4
Answer:
formula for area is length × height
so we have 13+8 ×16+4
21×20 = 420m
The answer would be 331 weeks rounded. Just divide.