Express (7x + 3a)(7x+5a)(7x+9a)(7x+11a) + 61a^4 as the sum of two squares

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

What is fraction that is equivalent to 3/8