Evaluate 9-b when b=8

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

Graph the line with the given slope m and y-intercept b. m=-3,b=1

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.