Final answer:
To find the projection of when 63.7% of full-time college students will have jobs, substitute the given percentage into the formula J = 2.7x + 34 and solve for x. The projection is approximately 12 years after 1980.
Step-by-step explanation:
To find the projection of when 63.7% of full-time college students will have jobs, we can substitute the given percentage into the formula J = 2.7x + 34 and solve for x. Let's denote the percentage as 0.637 and solve the equation:
0.637 = 2.7x + 34
Subtracting 34 from both sides, we get:
-33.363 = 2.7x
Dividing both sides by 2.7, we get:
x = -12.37
Since the question asks for the projection after 1980, we discard the negative value and conclude that 63.7% of full-time college students will have jobs approximately 12 years after 1980.