exam Maths Puzzle Numerical Ability

The sales tax is $49 for a dining room table that costs $1225. Find the sales tax rate?

Read Solution (Total 0)

exam Other Question

The question is: Any three points are contained in exactly one plane. I think the answer is true, but I want to make sure I can explain it correctly.

Thanks i do not understand this show me please?
(2r-3s)(4r^2+6rs+9s^2)