Should be 1/3 so about 28,466.7 around that amount
C cuz if it opens down a is negative and also it’s a parabola so it’s quadratic
If your writing the equation it would be e subtracted by 5 equals 18 so it would look like e-5=18
2/3x - 36 ≤ 22
+36 +36
----------------------
2/3x ≤ 58
2x ≤ 174
x ≤ 87
Hope this helps!
3/5n+9/10=-1/5n-23/10
+1/5 +1/5
4/5n+9/10=-23/10
-9/10 -9/10
4/5n=-32/10
divide 4/5 on both sides
n=-4