87 is a composite number because it is divisible by 3, all of the rest of the numbers are prime
$20.00 ≥ 7.50+1.25x
subtract 7.50 from both sides
20-7.50=12.50
12.50=1.25x
12.50/1.25=10
x= 10 rides
-17 + 28 = 11
hope this helps, give brainliest
The nth term is 6n^2-11n+16