2. six cell phones weigh 46.2 ounces.
fourteen cell phones weigh
107.8 ounces. does this represent
a proportional relationship?
explain. if so, state the constant of
proportionality.

Yes, they're proportional and the constant of proportionality is 7.7.

Step-by-step explanation:

They are proportional because 46.2÷6=7.7 and 107.8÷14 also equals 7.7. This also means that 7.7 is the constant of proportionality.

19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19