1&15 and 3&5 are factors of 15
1 is not a function. 2 is not. 3 is not. 4 and 5 are functions. 6 is not.
Answer:
b) 3w² = 243
Step-by-step explanation:
area = L x w
L = 3w
substitute for L:
243 = 3w x w = 3w²
3w² = 243
Four as zeros don't count when you're figuring out significant figures
Make the denominators equal by multiplying them:

Subtract:

Simplify:

The answer is

or 0.16