the answer would be 50.27m3
1600×85%=1360 I think that 1360 Tickets were sold
x ≤ 2.6 would look like this on the number line, the 2.6 part would be shaded in as well and not left open since x is less than OR EQUAL to 2.6
The period will be the length for one cycle of the function.
answer: 10