Identify the coefficients in the expression 5a3−7a2+a+2. Select all that apply. 1. 3
2. 2
3. 7
4.1
5. -7
6. 5

His is the name of the group in the house of representatives that, in 1947, began hearings to expose communist infiltration in american life. unfortunately, a good deal of the evidence they used was based on hearsay and conjecture, meaning innocent people were harmed by their findings.