Simplify this expression
3(7+4x)+3

Five more than the product of a number n and 8 is at least 100. write an inequality that can be used to find all positive values of n

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

The sum of two numbers is 86, and their difference is 20. find the two numbers