Hello! Could you please answer these - I am having trouble and I have to take care of my grandma right now..
Please explain

so looks like they want you to solve each of them first, then plot them on the number lines.

1) x+8 >= 18

subtract 8 from each side

x >= 10

so for this one you would plot the point (a closed circle, since it's greater than or equal to) on the ten, and draw an arrow pointing to the right

2) x-1 > 6

add 1 to each side

x > 7

for this one you would plot an open circle on the 7 and draw an arrow to the right

3) -7+x >= -8

add 7 to each side

x >= -1

for this one you would plot a closed circle on the -1 and draw an arrow to the right

4) x-1 <= 3

add 1 to each side

x <= 4

for this one you would plot a closed circle on the 4 and draw an arrow to the left

if you was gonna solve for a, a is a   < -12