Which expression is equivalent to -3z +17 - (-152) - (-4)? 12:z+ 13
-18z: + 13
18z: +21
12z: +21

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

What is always true when two whole numbers are subtracted?