CPhill

You can use the onsite calculator to solve this.....!!!

Let N represent the number...so we have....

N + 3   and we want to multiply that sum by 4 =

4(N + 3)   and we want this to = 16

4(N + 3) = 16        simplify on the left

4N + 12 = 16     subtract 4 from each side

4N = 4      divide by 4 on each side

N = 1

And there you are !!!

43+7+x-16=0    simplify

50 + x - 16 = 0

34 + x = 0      subtract 34 from both sides

x = -34

The total distance driven is = (12x5) + (18x9) + (15x11) = 387 m

If we consider each trip as a separate entity and plot the ending points on the y axis, we have:

(0, -60) + (0, 162) + (0, -165)  =  (0, -63)......so the final displacement is 63m S

Nice analysis there, geno........!!!!

5⁶/ 5⁴  =  5²  = 25 boxes

Note 22 x 9   =  

(20 x 9)  + (2 x 9)  =

180 + 18 =

198

9 x 22 = 198