Which of the following relations is a function?
{(5, –7), (4, 6), (–3, 8), (5, 9)}
{(8, –4), (–4, 8), (–4, –8), (–8, 4)}
{(2, 3), (–2, 3), (3, 2), (–3, –2)}
{(9, –1), (–1, 9), (9, 2), (2, –1)}

Write the inverse of the logarithmic function used to represent the situation in model 1, f(x)=3+2in x . express the answer in radical form.

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

The weekly revenue for a company is r = 3p^2 + 60p + 1060, where p is the price of the company's product. what price will result in a revenue of $1200.