Sharon paid $78 on sales tax. The sales tax rate is 6.5%, what was the cost of the camera? Please help, I've been trying for an hour now my assignment is past due.

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Which value of c would make he following expression completely factored? 8x+cy

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?