Bernadette says that the plotted point is located at (−5, −41 2 ). What is Bernadette's error? A She switched the x- and y-coordinates.
B Both coordinates should be positive values.
C The x-coordinate should be 5.
D The y-coordinate should be Negative 3 and one-half.

Question and answers are in the attached picture. you so much in advance.

Find the product of (4x + 3y)(4x − 3y). 16x2 − 24xy + 9y2 16x2 − 9y2 16x2 + 24xy + 9y2 16x2 + 9y2

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?