The answer is 19y – 9.
First, distribute the -3 to ( -4y + 3 ). So:
= ( 12y – 9 ) + 7y
Then, combine like terms. In this case, the like terms are 12y and 7y. So:
= 12y – 9 + 7y
= 19y – 9
21 rounded to the nearest 10 is 20 :)
Answer:
<u>About 8.5 mins</u>
Step-by-step explanation:
This is a compound decay problem, which goes by the formula:
Where
F is the future amount (we want it to be 380)
P is the present amount (980 now)
r is the rate of decay per minute (10.5% = 10.5/100 = 0.105)
t is the time it takes (what we want to find)
Substituting, we get our answer to be:
SO, it is going to take about 8.54 mins, rounded to nearest tenth (1 decimal), we have:
<u>About 8.5 mins</u>
Let x or y be 0
4x-2y=5
4(0)-2y=5
-2y=5
Divide -2 and 5 by -2.
y=-2.5
4x-2y=5
4x-2(0)=5
4x=5
Divide 4 and 5 by 4.
x=1.25
I did not check my math, feel free to correct me.
The y-intercept is the point where the graph of the function intersects the y-axis.
At the y-axis, the x-coordinate is 0.
Find f(x) for x = 0.
f(x) = (x - 6)(x - 2)
f(0) = (0 - 6)(0 - 2)
f(0) = (-6)(-2)
f(0) = 12
Answer: The y-intercept is point (0, 12)