Answer:
20-29: Make it 1 unit tall
30-39: Make it 5 units tall
Step-by-step explanation:
20-29: 22 (1 number)
30-39: 31, 32, 32, 32, 32 (5 numbers)
let's factorise :
now, there are two cases :
case 1 :
case 2 :
19) x=-3, 20) a=1, 21) b=3, 22) x=8
hope that helps, those are the answeres to each question. :)))
