Answer:
3/8 is the answer lol gl im a genius
Step-by-step explanation:
~Hope this helps!
Since all the option shows the variation is direct..
I. E y=kx let's take the first one to find the k and as well the relationship
When y=24,x=20
24=k*20
K=24/20
k=6/5
K=1.2....
R/ r+ 15 = 3/8
Cross multiply: top of one side multiplied by bottom of other side:
R x 8 = 3 x r+ 15
Simplify:
8r = 3r + 45
Subtract 3r from both sides:
5r = 45
Divide both sides by 5:
R = 9
4.2 = <u>c
</u> 8
<u>
<em /></u><em>multiply both sides by 8
</em>
4.2* 8 = <u>8</u><u>c
</u> 8
<u>
</u> c = 33.6<u>
</u>
