The vertices of quadrilateral abcd are a(3,0), b(4,3), c(7,3), d(6,0).
(a) prove by means of coordinate geometry, that quadrilateral abcd is a parallelogram
(b) prove that abcd is not a rhombus

The price of a new video game is $59.69 before tax. allison bought the game for 12% off. she then paid 9.25% sales tax on the discounted price.part a: how much did allison pay in sales tax? show all work and steps in your solution. round your answer to the nearest cent. part b: what is the total amount that allison paid for the video game? show all work and steps in your solution. round your answer to the nearest cent