Of the 210 boys in the 8th grade, 190 have a cell phone. of the 168 girls in the 8th grade, 152 have a cell phone.

8th grade class cell phones total
boys 190 210
girls 152 168
determine if the relationship is proportional.

a.
proportional

b.
not proportional

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

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

Nour and rana are shopping for a christmas tree. they are deciding between 2 22 different types of trees (real and fake) and 4 44 colors for the ornaments (white, silver, gold, and purple). they each created a display to represent the sample space of randomly picking a type of tree and a color for the ornaments. whose display correctly represents the sample space?