Question

An IBM Computer Manufacturer finds that when x millions of dollars are spent on research, the profit of (x), in millions of dollars, is p(x) = 20 + 5 log3(x+3).
How much would you say should be spent on research to make a profit of 40 million dollars?

120 Million dollars

Answer 1

28.16 million

Answer 2

30.45

Answer 3

78 million

Answer 4

hero has the right answer

Answer 5

Thank goodness. I was questioning my answer at one point