
"Double h" means h^2 (h squared) or h times h.
Then, we multiply 4 by the result:
4h²
Remember, we always put a number before a variable.
h²4 is wrong and confusing.
The correct answer is



Answer:
i used be so good at this now i suck because it's been awhile
Step-by-step explanation:
3x+15+11x-5/2=47
14x+10/2=47
7x+5=47
7x=42
x=6