When i think of a number , double it and add three i get 11. what number did i think of

Solve for x, y, and z. show all steps.

The frequency table shows a set of data collected by a doctor for adult patients who were diagnosed with a strain of influenza. patients with influenza age range number of sick patients 25 to 29 30 to 34 35 to 39 40 to 45 which dot plot could represent the same data as the frequency table? patients with flu

Given abcd ac=38 and ae=3x+4 find the value of x