Answer:
A = 9x² + 12x
Step-by-step explanation:
The area (A) of the rectangle is calculated as
A = height × width
= 3(3x² + 4x) ← distribute parenthesis by 3
= 9x² + 12x
Please check the picture.
Answer:
0
Step-by-step explanation:
Given
- 0.4(3x - 2) +
← substitute x = 4 into the expression
= - 0.4(3(4) - 2) + 
= - 0.4(12 - 2) + 
= - 0.4(10) + 
= - 4 + 4 = 0
1. -2<2 2. -4> -5. -20<20. -7>-8. -10<-1. 50>-100