How do i solve for a for the indicated variable

16)

          .......as required

18)

..........as required

Step-by-step explanation:

16)

Multiply both the side by 'a'  and divide both the side by 'u'

Cancel 'u'on Left side and 'a' on right side we get

          .......as required

18)

.......Given

Dividing by 4 on both the side we get

Cancel 4 on right side we get

..........as required

(-5,-28)

i graphed to on desmos.

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24