If I make .30 a minute per hour guaranteed 45 mins of that 60 minute hour what will I make an hour

If you make $0.30 per minute for 45 minutes in a 60-minute hour, you will earn:

$0.30/minute * 45 minutes = $<<0.30*45=13.50>>13.50 per hour.

I am not sure about the phrasing of the question.

If you work 3/4 hour and are paid .3*45 = 13.5 for 3/4 hr
then your hourly pay rate would be (4/3) * 13.50

If you work 45 minutes out of a 60-minute hour and are paid $0.30 per minute, your earnings for the 45-minute period would be:

$0.30/minute * 45 minutes = $13.50

To determine the hourly rate based on this, you can divide the total earnings by the fraction of an hour worked, which is 3/4 or 0.75:

$13.50 รท 0.75 = $18.00

So your hourly pay rate would be $18.00 per hour.

I suspect that is the answer the student needed.

Yes, my previous response provides the calculation for the hourly rate based on the given information. The hourly rate would be $18.00 per hour if you make $0.30 per minute for 45 minutes out of a 60-minute hour.