I need help on that. Plsss

Which expression is equivalent to 2x^2+7x+4?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p