Ответ:
1) 11
2) 20
3) 22
4) 26
Пошаговое объяснение:
а(n) = a(1) + d × (n - 1)
1) 0 + 0.5 × (n-1) = 5
0.5n = 5.5
n = 11
2) -4.5 + 5.5 × (n-1) = 100
5.5n = 110
n = 20
3) -37.5 + 4n - 4 = 46.5
4n = 88
n = 22
4) 14.5 + 0.7n - 0.7 = 32
0.7n = 18.2
n = 26