To find −4 + 1, start at 0. Draw the arrow for −4. Then, from , draw the arrow for 1; the sum is . To find −4 + (−1), start at 0. Draw the arrow for −4. Then, from , draw the arrow for −1; the sum is .

Complete the steps to find the sum of − + by filling in the blanks. Model the equation using straight arrows called
vectors on the number line below.
a. Place the tail of the arrow on .
b. Draw the arrow units to the left of , and stop at − . The direction of the arrow is to the left since you are counting down from .
c. Start the next arrow at the end of the first arrow, or at − .
d. Draw the second arrow units to the right since you are counting up from −.
e. Stopat.
f. Circle the number at which the second arrow ends to in

The region of the united states where beef and hog production is prevalent is the midwestthere are 12 states in this area including  illinois,  indiana,  iowa,  kansas,  michigan,  minnesota,  missouri,nebraska,  north dakota,  ohio,  south dakota, and  wisconsin. all of these states are known for their meat and such products.