Answer:
x = 0.3 (see below)
Find the x intercept/zero.
To find x intercept/zero, subsitute H (x) = 0.
0 = 5.7 - 19x
Move the variable to the left hand side and change the symbol.
19x = 5.7
Now, divide both sides.
x = 0.3
Solution is 0.3
Alternate solution is x = 3/10.
Hope it helps!
