Umm.. I have to see the problems, we might not have the same textbooks so
We can rewrite the expression under the radical as
then taking the fourth root, we get
Why the absolute value? It's for the same reason that
since both and return the same number , and captures both possibilities. From here, we have
The absolute values disappear on all but the term because all of , and are positive, while could potentially be negative. So we end up with
Answer:
B.x>4is a required interval.
Step-by-step explanation:
5y + 3 > -7y + 13
12y > 10
y > 10/12
y > 5/6
Answer:
b. (60)
Step-by-step explanation:
n represents the number of payments. If there are 4 per year for 15 years, that's a total of 4×15 = 60 payments.
n = 60