Final answer:
The equation in slope-intercept form that models Rutgers University's charges is y = 5000 + 1000x, where y represents the total cost and x represents the number of credits taken.
Step-by-step explanation:
The equation in slope-intercept form that models Rutgers University's charges is:
y = 5000 + 1000x
Where y represents the total cost, x represents the number of credits taken, 5000 represents the one-time fee, and 1000 represents the per credit fee.
For example, if a student takes 4 credits, the total cost would be:
y = 5000 + 1000(4)
y = 5000 + 4000
y = $9000