Are these triangles similar? What are
the measures of the angles?

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12