70% of the items at Flour and Fun bakery are gluten free. If there are 21 gluten-free items, how many items does Flour and Fun bakery sell? help plz

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

The product of sin 30 degrees and sin 60 degrees is same as the product of