Someone help

3 = 10 - n

please show work as well! will give brainliest.

You paid $7.70 to the mail package that weighed 5.5 lb. right and solve any quetion to find the cost per pound ? ?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show