Answer:
3
Step-by-step explanation:
2+1 = 3
(1 + x) (13) = 13+6.5
13x + 13 = 19.5
13x = 6.5
x = 0.5
The item was marked up by 50%
Answer: 88 units
yes, by SAS
cause the GI and JL are congruent and the same for HG and LK