What is heat and how do it work to move so it works for warmth?

What is 1/2 x (6 x 4)+3 + 2 show your work

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

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