Saying that 4 < sqrt(x) < 9 is equivalent to is saying what about x?

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

2/3(-6y+9x) expand each expression using the distributive property

Askateboard ramp is in the shape of a right triangle what is the height of the ramp