What do the following two equations represent?
-2x –4y=-3
-X+3y = -4
Choose 1
A. Equal lines
B. Parallel lines
C. Perpendicular lines
D. None of the above

Which of the following is the shape of a cross section of the figure shown below

On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?