0.0045, Bc that negative exponent makes the decimal point move to the left!
18 shells because since Mary has 6 and Tina has 3 shells all you have to do is multiply 6 and 3 to get 18
If this is an option, it should be Similar Triangles.
Answer:
2.646
Step-by-step explanation:
You have to 6 to the 1 and then take the square root of the number which is seven leaving you with 2.646