Which operation should you perform first when simplify you 75-(8+45/3) *7?

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.

What is the value of the discrimination for the quadratic equation 0=×2+2+×2

Which situation is an example of an observational study?