Find the value of z that makes the equations true. •PLEASE HELP 100 POINTS

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x

Two numbers have a sum of 93. if one number is p, express the other number in terms of p.

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.