How can I send you the drawn representation on number line ?
25)
z + 4 >= 2z
-z >= -4
z <= 4 (you flip the sign when you divide over negative number)
on number line: from 4 to -infinity
you use normal arithmetic like equations
29)
-9 + 2a < 3a
-9 < a (just one step done)
on number line from -9 to infinity
41 and 43 ? not in the page
3y - x = a
To solve for y we isolate the y variable.
3y = x + a
y = (x + a)/3
57 cm 9x8 is 72 -1 is 71 9x6 is54 +3 = 57
