Part A: The sun produces 3.9 ⋅ 103^3 ergs of radiant energy per second. How many ergs of radiant energy does the sun produce in 2.45 ⋅ 10^5 seconds? Part B: Which is the more reasonable measurement of the diameter of a blood cell:
7.4 ⋅ 10^−3 mm or 7.4 ⋅ 10^3 mm? Justify your answer.

B

Step-by-step explanation:

Let's go through each equation one by one until we find one that satisfies the condition.

Equation A cannot have two real solutions, since the only thing that could make it true is 10i, which is not a real number.

Equation B could have two real solutions, since if you divide both sides by 5 then you will be left with , which has two real solutions of and . Therefore, the answer is B. Hope this helps!