Achild has a piggy bank that contains only quarters and dimes. altogether, there are 27 coins in the bank and the total value of the coins is $4.50. how many quarters and how many dimes are in the piggy bank?
a. write a system of linear equations based on the description. use x to represent the number of quarters and y to represent the number of dimes.
b. solve the system using the elimination method. show all the steps leading to your answer.
c. write 1-2 sentences to explain what the solution means for this situation.

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?

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

Prove that quadrilateral is a rhombus.