Answer:
w=20
Step-by-step explanation:
Solve for w by cross multiplying.
Answer:yes
Step-by-step explanation: it represents a function
Answer:
18
Step-by-step explanation:
30*0.4=12
This means 40% of 30 is 12 and Ana has completed 12 problems.
30-12 = 18, so she still needs to do 18 problems.