2/5 of one less than a number is less than 3/5 of one more than that number what numbers are in the solution set of this problem

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?

Find the radius of a circle that has a circumference of 16. the formula for the circumference of a circle is c = 2tr, where r is the radius and c is the circumference. the equation solved for r is r = c over 2π. r=4 r= 8 r=12 r= 16