Write the equation of a line perpendicular to y+2x= -8 and passes through the given line’s y-intercept. Leave answer in slope-intercept form.

What is the value of x when x + 7 = 21?

Oliver had $50 on the day before his birthday. after he recived some money for his birthday , he had $75. write and solve eqaution to find how much money oliver received for his birthday. x+50=75

Find the x-intercepts for the parabola defined by this equation: y=-3x^2-6x+9