Answer:
Each pen costed $5.
Step-by-step explanation:
Simple, the coefficient (5) is the cost for one of the pens & the x is the amount of pens bought.
Hope this helped & please give me the brainliest if it did!
Abd is a right angled triangle so by pythagoras we know

and to calculate h we need to use the sine rule

i hope this helps
find the area the get the premiraterStep-by-step explanation:add