Answer:
C) 
Step-by-step explanation:

Simple
scientific notation
8.009 × 10-3
Answer:
Step-by-step explanation:
a. no. 9 x 15 = 135, so if she sells more than 15 necklaces, she'll make a profit
b. 50n > 135 + 4.50n
True
It won’t be a Prefect Triangle but it still is one
(sorry my drawing is bad)