Awe, okay, I learned how to do this. Direct variation equation y=kx. So, I believe you're asking for help on 9 so here, y=k/X=k=y/x =-5/2. Now, plug back the fraction into y=kx like this, - 5/2(8) since X is 8 in this case, which equals - 20. What was just solved was your y for when X is 8.
Answer: 2n+4
Step-by-step explanation:
"(4 more than) <u>twice the number</u>" is 2x
"<u>4 more</u> (than twice the number)" is +4
Put them together: 2n + 4
We can simply divide 5.5 by 10 to find the unit price.
5.5/10 = 0.55
<h3>Each gallon costs $0.55. </h3>
K(x) = (1/2)ˣ
Since a (=1/2) is < 1, this exponential function is decreasing .
y-intercept for x = 0
k(x) =(1/2)⁰ → k(x) =1, then y-intercept = 1
Horizontal Asymptote:
lim k(x) = (1/2)ˣ = 0
x→∞
Horizontal asymptote x = 0
1 1/2 plus 3/4 equal 9/4, and 9/4 divided by 1/8 equal 18
