5 times a number decreased by thirteen. Not sure if there should be the =12, so I didn't include it in the verbal description. Hope it helps!
3,500 is the best estimate if you multiply 7 by round 456 to 500 so 7x500=3,500
Answer:
12
Step-by-step explanation:
30*(100-60)/100
30*4/10
3*4
12
Answer:
time period (t) is 2.25 years
Step-by-step explanation:
Given data in question
amount (a) = $94000
principal (p) = $78870
rate (r) = 7.8 % = 0.078
to find out
time period (t)
solution
we know that continuous compound interest formula i.e.
amount = principal
...............1
we will put all value a, p and r in equation 1
amount = principal 
94000 = 78870 
= 94000 / 78870
now we take ln both side
ln
ln (94000 / 78870)
0.078 t = ln 1.19183466
0.078 t = 0.175494
t = 0.175494 /0.078
t = 2.249923
so time period (t) is 2.25 years