Can you please send me a picture?
(7c-18)-2c>0
group like terms: 7c-2c-18>0
add similar elements: 7c-2c=5c
5c-18+18>0+18
Add 18 to both sides
5c-18+18>0+18
simplify
5c>18
divide both sides by 5
5c÷5>18/5
simplify
c>18/5
Answer:
Pythagoras theorem. 20^2 times 18^2 = distance^2
Answer:
k =4
k is the amplitude of f(x)
