Which of these would be a good reason to use scientific model? (a) to use up extra research money (b) to replace a prototype with something better (c) to make a scientific idea more understandable (d) to keep scientists from getting bored when they work

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i = 2 / - 5

step-by-step explanation:

evaluation of ( 2 - 4 ) ( p + q ) when p = 2 and q = 5 i, by putting values of p and q,