Well, the 89c bulb lasts twice as much, but costs less than twice as much. So, it's a better option. Here are two other ways to figure this out:
1) After 2000 hours, you will have used two 60c bulbs (each of them lasted 1000 hours). So, you will have spend 1.2 dollars. On the other hand, in the same 2000 hours, you would have needed only one 89c buls (which would have lasted the whole 2000 hours).
2) You can compute the dollars-per-hour ratio: spending 60c for 1000 hours means that you pay
dollars per hour. Similarly, the other bulb costs
dollars per hour, which is less.
Answer:
x = 60.
Step-by-step explanation:
Do 6 * 10 to find x. 6 * 10 is 60, which is the answer.
If im sure it should be c
Answer:
2x+6
Step-by-step explanation:
Look at the attached picture. :)
Hope this helps!
I hope I read it correctly and address as such.
Anywho, this is how my teacher taught me to deal with a question like that. Basically just break up the polynomial on top and divide each part separately by the monomial denominator.