Toby plans to enroll for 2 semesters per year of college. How can he calculate the extra amount he needs for expenses for each semester? What is the amount that he needs per semester?

Which equation can be used to solve for the unknown number? seven less than a number is thirteen. n-7=13 7-n=13 n+7=13 n+13=7

Which statement best describes the polynomial

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?