Answer:
$0.84
Step-by-step explanation:
1. find total cost of both the pen and paper
2. find the amount Sally spent
3. find cost of ruler
The y function
hope this helps
Answer:
18cm
Step-by-step explanation:
Answer:
a = 
Step-by-step explanation:


(now you can multiply the whole equation by 6 to remove the fractions
4a - 1 = 2
4a = 2+1
4a = 3
a = 