

Substitute 51/5x into

Substitute that into

Hope this helps. Answer should be correct. Unless your quadratic equation is wrongly stated.
The first one!! it should be correct
I'm not sure how to do this manually but if you plug in 7/12 in a scientific calculator and then press sin -1 you'll get approximately 35.685
Answer:
$19.55
Step-by-step explanation:
17*0.15=2.55
17+2.55=19.55
Answer:
$1.50
Step-by-step explanation:
If you do cost per quantity you would get $9 over 6 visits. Then you divide both sides by 6 because to get to one by 6 it's 6 so when you divide both sides by 6 you would get 1.5 over 1 and all you do is add a zero because you're dealing with money
Hope this helps :)