How many units apart are parallel lines m and n such that T (ΔXYZ) = (Rn ∘ Rm)(ΔXYZ)?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Nine more than four times a number is the same as one less than twice the number. find the number?