Answer:
the formula for surface area is 2(lb + bh + lh) sq is that helps :))
Step-by-step explanation:
Ok... so this question can be solved by using simultaneous equations.
Use the general from of a parabola

you know the value of c, the y-intercept... y = -4
which means the equation is

now use the other 2 points to get 2 equations in 2 unknowns
(-2, -20) just substitute

this becomes

now the other equation using (4, -20)
The simplified form is
Answer:
Neither arithmetic nor geometric.
Step-by-step explanation:
It would need to be 16.4592 meters higher which rounds to 16 meters rounded to the nearest tenth
<u>answer:</u> 
<u>work:</u>
| subtract 13.50 and move it over
| divide by 7/2
| final answer