Union and Interception of Intervals, math homework help

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Union and Interception of Intervals, math homework help

The sets D and E are defined as follows.

D = {y|y > 3}

E = {y|y ≥ 7}

Write 
D∪E and D
∩E using interval notation.

If the set is
empty, write 
∅. 

Answer it in the form below.

D ∪ E = 

D ∩ E = 

.