Linda enrolls for 10​ credit-hours for each of two semesters at a cost of ​$400 per​ credit-hour (tuition and​ fees). In​ addition, textbooks cost ​$200 per semester.

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2