Help again with this question

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?

Lines f and g are cut by the transversal d. the measure of 1 = 2x + 35 and the measure of 8 = 10x - 85. what value of x will show that lines f and g are parallel? a. 19 b. 26 c. 18 d. 15

Grant simplified the expression 1.5(-3.2 + 2.5) his work is shown below explain the error in grants work