Reorder the terms 4 - 61 - 7+ 4i using the commutative property of addition so the real numbers are at the beginning of the expression, and the Imaginary numbers are at the end of the expression.
A: 4 + 4 - 7 - 6i
B: 4+4i-6i-7
C: 4-6i+4i-7
D 4-7-6i+4i

11. How can the commutative property of addition be used on the expression 5i– 8 - 4i + 2 so the real numbers are at the beginning of the expression and the imaginary numbers are at
the end?

A: interchange 5i and 2
B: Interchange - 8 and 5i
C: Interchange -8 and -4i
D: Interchange - 4i and 2

Mercury poisoning is dangerous overload of mercury within the body. a major source of mercury within the body, a major source of mercury poisoning is consuming fish that contain mercury. certain fish are more prone to having higher levels of mercury than others. the pie chart shows the distribution of four breeds of fish at a hatchery. the hatchery has approximately 6,000 fish. a biologist from the centers for disease control and prevention randomly test 5% of each breed of fish for mercury content. her findings are shown in the following table. based on the biologist's findings, if a single salmon is randomly selected from those that were tested, what is the probability that this particular fish would have a dangerous mercury level? a) 0.001 b) 0.004 c) 0.02 d) 0.08

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?