Apattern starts with 1. the second number is a 9. the third is a 17. fourth is a 25 and fifth is 33. if you double the 15th number in the pattern, will the result be even or odd

the number number will be even

Common difference is 8

an = a1 + d(n-1)

a15 = 1 + 8(15-1)

a15 = 1+ 8*14

a15 = 1 +112

a15 =113

double it 226

even number

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.