math
posted by The Awesome One..... .
How can I find the tax?

Multiply by the tax rate.

i tried that but my answer came out with hundreds

What is the problem? Please post what you did, and I'll be glad to help you.

1. your favorite book is $29.50, how much is it with tax?
2. A new bed set is $45.00, it is 15% off discount with the tax
3. Your brother's baseball costs $53.35 a month, but now they added 23% of the original cost to it, how much is it now?
Note: each answer needs tax of 7.725% 
1.
29.50 * 1.07725 = ?
2.
45 * 0.15 = 6.75
0.07725 * (45  6.75) = ?
3.
0.07725 * (53.35 * 1.23) = ? 
thank you

You're welcome.