Ok you just replace the x for a 2.
2(2)^4 - 8(2)^2 + 5(2) - 7
2(16) - 8(4) + 5(2) - 7
32 - 32 + 10 - 7
10 - 7
3
It's A. f(2) = 3.
3 is the leading coefficient of the x term
Answer:
y = 2/3x + b
(Find b first with the steps below)
Step-by-step explanation:
The equation is y = mx + b and m is the slope. You were already given the slope and you were even given a point. All you have to do is graph the point and use the slope until it intercepts the y-axis.
- Plot the point (9,-8)
- Go up 2, left 3 spots until the line hits the y-axis (the vertical one)
- That point is what b will be equal to in y = mx + b
Answer:
Step-by-step explanation:
Let x be the portion of 60%
180 - x is the portion of 40%
0.60x + 0.40(180 - x) = 0.55(180)
0.60x + 72 - 0.40x = 99
0.20x = 27
x = 135
180 - 135 = 45
First brand = 45 gallons of 40%
Second Brand = 135 gallons of 60%
