Please help me to find the equations of the following data.

x=[0 10 20 30 40 50 60];
y1=[.30 .50 1.40 1.60 2.60 2.90 3.35];
y2=[.68 .94 1.53 1.9 2.78 3.0 3.5];
y3=[1.029 1.34 2.36 2.81 3.7 3.9 4.7];

3 different equations required.

Answer 1

[Walter Roberson]

d = randperm(6,3);
c1 = polyfit(x, y1, d(1));
c2 = polyfit(x, y2, d(2));
c3 = polyfit(x, y3, d(3));

[Sajal Khandelwal]

I am thankful for your answer but not getting correct values for y2

[Walter Roberson]

d = randperm(5,3);