Julia finds that she can mail a 10 pound package for $5.10 and a 15 pound package for $8.85.what is the constanrt of proportionality?

0.75

Step-by-step explanation:

Using the equation

y=mx

where y is the cost, m is constant and x is variable representing packages

8.85=15x

5.1=10x

Subtracting equation 2 from 1 then

5x=3.75

x=3.75/5=0.75

x=0.75

The constant of proportionality is 0.75

3 1/3 x 2 3/5 = 8 2/3

step-by-step explanation:

just multiply the first number by the second number to get your answer.

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363