12-pack of pencils for $.99 OR a 50-pack for $4.50

First, find the unit rate of each price.

0.99/12=0.08

4.50/50=0.09

Then decide the best price by finding the lowest number.

0.08 is the lowest.

So the 12 pack would be the cheapest and best way to go.

hope it helps!

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours