Answer:
Jess used 34 blocks
Step-by-step explanation:
the first stack =7
second stack =7+3=10
third stack =10+7=17
total: 7+10+17=34
SSS
Can't be AA. (no angles given)
Can't be SAS. No angles Given
Can't be not. (CPCTC)
11.5 for first question
14, 15