Taking into account the measures shown in the graph:
• From January to February, Jutta's hair grew: 4.1" - 3.3" = 0.8" (greater than 3/4")
,
• From February to March, Jutta's hair grew: 4.8" - 4.1" = 0.7" (less than 3/4")
,
• From March to April, Jutta's hair grew: 5.5" - 4.8" = 0.7" (less than 3/4")
,
• From April to May, Jutta's hair grew: 6.4" - 5.5" = 0.9" (greater than 3/4")
,
• From May to June, Jutta's hair grew: 6.7" - 6.4" = 0.3" (less than 3/4")
,
• From June to July, Jutta's hair grew: 7.7" - 6.7" = 1.0" (greater than 3/4")
Then, her hair grew more than three quarters of an inch in the next months: February, May, and July