15. Mr and Mrs Thomas buy tickets for themselves and their four children. The cost of an adult ticket is $7 more than the cost of a child ticket
The total cost of the six tickets is 586
Work out the cost of an adult ticket​

$102.33

Step-by-step explanation:

586= 4t + 2(t+7)

586= 4t +2t +14= 6t +14

572= 6t

95.33=t

adult ticket = t +7

answer: answer

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)