Question

02

Question 3 (2 points)
Find the estimate
At a certain university. It costs a student $689 per credit hour to attend. Estimate
the cost for a student to attend one semester if he registers for 9 credit hours.

Answer 1

About $6000

Explanation:

Multiply 689 × 9.

When you are estimating, you should round the numbers off to values that you can easily work in your head.

I would round 9 up to 10 and 689 down to 600 to compensate. Then,

10 credit hours × $600/credit hour ≈ $6000.

It should cost about $6000 to register for 9 credit hours.