Answer:
The third expression: (2x)^3
Step-by-step explanation:
Plug in 3 for x in each expression
2x^3
2(3)^3
Use PEMDAS
2 (3 × 3 × 3)
2 (9 × 3)
2 (27)
54
2x^3 + 5
(The last expression told us 2x^3 = 54 so feel free to use this information to make life easier)
54 + 5
59
(2x)^3
(2 × 3)^3
Use PEMDAS
6^3
6 × 6 × 6
36 × 6
216
(x - 1)^3
(3 - 1)^3
Use PEMDAS
2^3
2 × 2 × 2
4 × 2
8
216 is the greatest value so the third expression is the answer
6. South Pole
5. North Pole
Answer:
Increase Percentage =
![\frac{increase}{original} * 100= \frac{43-25}{25} *100= \frac{18}{25}*100 = 72](https://tex.z-dn.net/?f=%5Cfrac%7Bincrease%7D%7Boriginal%7D%20%2A%20100%3D%20%5Cfrac%7B43-25%7D%7B25%7D%20%2A100%3D%20%5Cfrac%7B18%7D%7B25%7D%2A100%20%3D%2072)
Percentage increase in hairlength = 72%