What's the rest?You only said, From 180 books to 150 books sooo you gotta put the rest or nobody will answer it.
"y varies directly as x" means y = kx
you do not know what k is yet, other than that it is some constant number.
Now plug in the given values, y=12 when x=4, in the equation
12 = 4k
=> k = 3
Now rewrite the equation with the k value you just found
y = 3k
Substitute 18 in place of x
y = 3(18)
y = 54
Answer:
336
Step-by-step explanation:
you just have to do 28*12.
The answer is 336. :D
Answer:
$15.
Step-by-step explanation:
90-75=15, which is the difference between the two. Hope this helps.
Answer:
Step-by-step explanation:
4x+2=5x-6
4x-5x=-6-2
-x=-8
therefore, x=8
