i belive 60% becuse it lands on heads 60 time out of a hudred
Answer:
x = 2/3
Step-by-step explanation:
cross multiply
-9(x-4) = 10(3x+1)
and then solve the equation
-9x + 36 = 30x + 10
36 = 39x + 10
26 = 39x
x = 2/3
1200 times .09 = 108
so $108 interest
1200 +108 = 1308
1308 divided by 18 equals 72.67
so $72.67 a month