Answer:
1. y=7x
2. y=9x
Step-by-step explanation:
T^2=4π^2*L/G
L=(T^2*G)/4π^2
hope this helps
1. a
2. b (i think)
3. b
4. a
5. d
im not sure bout all this but h ope it helps you
18% is the % of the tip