Answer:

13 unit

Step-by-step explanation:

................

30 days

climbs 3 falls 2

3-2=1

so 1 foot each day

it is 30 feet

so 1 foot x 30 feet is = 30 days

same denominator as 12

2 x 2/ 6 x 2 + 1 x 3/ 4 x 3

4 +3/ 12

= 7/12

2x-1=x

2x-x=1

x=1

cant read it at all