I've read all of them carefully.
A calculator won't help you do 1-4.
It might be a little bit useful for 5 and 6, but only slightly. If you know your math then you shouldn't have any trouble with those either.
Answer:
No
Step-by-step explanation:
It largely depends on required margin of error but I would say that the tested population size is going to be too small.
Answer:
Step-by-step explanation:
- 8x + 44 ≥ 60
Subtract 44 from both sides
- 8x + 44 - 44 ≥ 60 - 44
- 8x ≥ 16
Divide both sides by -8 and flip the inequality sign
-8x/-8 ≤ 16/-8
x ≤ -2
x = { ......... -4,-3,-2}
2) -4x + 50 < 58
Subtract 50from both sides
-4x + 50 -50 < 58- 50
-4x < 8
Divide both sides by -4 and flip the inequality sign
-4x/-4 > 8/-4
x > -2
x= {-1, 0 , 1 , 2....... }
Since the exponent is on the outside of the paranthesis, you'd have to multiply it by everything on the inside: a^m x b^m