The area is 21cm squared. u would have to find the length of the bottom triangle which is 14. than multiply that by the height which is 3. finally divide that all by 2 and youll get the area
X intercept- 3.5
y intercept- 2.5
This answer is a. Just do distributive property
The equation would be:
x - 9 < 4
Simplify (add 9)
Solution: x < 13