What's the answer for this and how did you know that's you response is right

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Consider the following equation -167 + 37 = 49 - 21p select the equation that has the same solution as the given equation. o a. p - 5 + ip = 7 - p ob. +55 + 12p = 5p + 16 c. 2 + 1.25p = -3.75p + 10 d. -14 + 6p = -9 - 6p reset next