Please help quickly thanks

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Yahir designs bracelets. he uses between 9 and 15 red and yellow beads in the ratio of 2 red bead to 5 yellow beads. drag the beads into the container to meet these requirements