SOMEONE PLEASE HELP
Evaluate 7 sigma n=3 2n+5
75
77
96
98

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.