• Jan 23rd 2007, 11:49 PM
Ash
A car rental agency charges you \$26 per day plus 12 cents per mile. Write a numerical expression that represents the total cost of a one-day, 160-mile trip. Which operation in your expression would you perform first?

and, with the problems below did I do them correctly?

http://i140.photobucket.com/albums/r...ss/math110.jpg
• Jan 24th 2007, 01:15 AM
ticbol
Quote:

Originally Posted by Ash
A car rental agency charges you \$26 per day plus 12 cents per mile. Write a numerical expression that represents the total cost of a one-day, 160-mile trip. Which operation in your expression would you perform first?

and, with the problems below did I do them correctly?

http://i140.photobucket.com/albums/r...ss/math110.jpg

Total Cost = \$26*1 +\$0.12*160

I will perform the multiplications first, of course.

It's not shown how you did the two problems. The answers are shown, though.

Well, the answer, -4, for the first problem is correct.

In the second problem, the answer, 4, is correct if the radical sqrt(3*7 -5) is dividing the negative 4.
As it is shown, where there is no slash or division sign between the negative 4 and the radical, thereby saying the negative 4 and the radical are being multiplied, your answer, 4, is wrong.