Function intercepts the x-axis where y=0
![f(x) = y = -2x^2 -3x +20 \\ 0 = -2x^2-3x+20 \\ ](https://tex.z-dn.net/?f=f%28x%29%20%3D%20y%20%3D%20-2x%5E2%20-3x%20%2B20%20%5C%5C%0A0%20%3D%20-2x%5E2-3x%2B20%20%5C%5C%0A)
We can now calculate the discriminant and find the roots.
Answer:
$133.77
I am pretty sure that this is the answer.
Step-by-step explanation:
1 + (1.25)^29 = 646.23
200 + (20 x 29) = 780
780 - 646.23 = 133.77
Tell me if I am wrong.
If right, please give me brainliest.
X (X - 1) = 342
x² - x = 342
x² - x - 342 = 0
X = 19
Answer:
x =-18
Step-by-step explanation:
5(x + 9) = -45
Divide each side by 5
5/5(x + 9) = -45/5
x+9 = -9
Subtract 9 from each side
x+9-9 = -9 -9
x =-18