What number has the same value as 28 tens

Without graphing the linear functions, find the coordinates of the point of intersection of their graphs: y=3x−11 and y=4

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?