The cost of tuition at johnson community college is $160 per credit hour. each student also has to pay $50 in fees. model the cost, c, for x credit hours taken.
a)
c(x) = 50x
b)
c(x) = 160x
c)
c(x) = 110x
eliminate
d)
c(x) = 160x + 50

Option D is correct.

Step-by-step explanation:

Since we have given that

the cost of tuition at Johnson Community College is $160 per credit hour

Let the credit hour be x

So ,the cost of tuition for x hours will be given by

Now, we have also given that each student has to pay $50 in fees .

So, $ 50 will be to the cost of tuition for x hours i.e.

So, the cost function C for x credit hours taken by each student will be given by

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)