x is equal to 1.5, as 18 + 2 is 20, so you need the 12x to equal 18. Therefore 1.5.
Answer:
X = 1.5
Step-by-step explanation:
2 x 1.5 = 18 + 2 = 20
3:05
I hope this helps
Expand
0.5x^4 - 4.5 + 13
Collect like terms
0.5x^4 + (-4.5 + 13)
Simplify
<u>0.5x^4 + 8.5 </u>
4:30 minutes
and
14 minutes
respectively