X +
x - 1 > 0
First combine like-terms (x +
x).
2.6x - 1 > 0
Add 1 to both sides.
2.6x > 1
Divide both sides by 2.6 to isolate x.
x > 0.38
Answer:
As written, the function is linear. If you meant f(x) = 4(x - 2)^2 + 3, then it opens upwards.
Step-by-step explanation:
The key to find out whether a parabola opens upwards or downwards is the coefficient, or number in front, of the x^2 term. If the coefficient is positive, the parabola opens upward. If the coefficient is negative, the parabola opens downwards.
When simplifying f(x), squaring the inside using FOIL gives:
f(x) = 4(x^2 - 4x + 4) + 3
f(x) = 4x^2 - 16x + 16 + 3
Since the coefficient of x^2 is positive (4), the parabola opens upwards.
101, of course. What else would it be????????????????
18= -5t - 7
Here,
18 + 7= -5t
25= -5t
25/5=t
5= t
Answer: t= 5