A spinner has 8 equal regions. Each region is marked with one of the following numbers: 10, 20, 30, 40, 50, 60, 70, 80. What is the probability of an even number being spun on the first roll?

10010010001010010101001001010010100101010010101010010010101010110010001011010010010001

step-by-step explanation:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

nope.   happens to me as well.

-aparri