Guys i need help with this math question, can anybody help?

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Which is f(5) for the function –2x2 + 2x - 3?

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.