The sum of Ken's, k, and Alan's, a, ages is 62. Ken is 31 years older than Alan. Which of these systems of equations below best describes the ages of Ken and

Alan?

Multiplying an even number of negative numbers gives an answer that is choose from:

Acircle has a circumference of 7.850 units. what is its radius?

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright