Agroup of 8 friends went to a movie matinee. they spent $20 on snacks . the total cost of their tickets and snacks was $76.this problem can be represented by the equation 8x + 20 = 76. answer each question below .

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Which representation has a constant of variation of -2.5