Answer:
.764
Step-by-step explanation:
do it on a calculator (TI84)
Number 1.
, first we will take the 
of both of these numbers getting us,
, which then gives us that 
Number 2
, solve for our exponent, 
, use the logarithmic formula, and we get,
, which then we get that 
Answer: Diego has 5 fewer counters.
Step-by-step explanation:
In order to find the answer, you need to find the difference between the amount of counters Dara has compared to Diego.
(Amount Dara has) - (Amount Diego has) = Difference
12 - 7 = 5
Diego has 5 fewer counters
Answer:
y = 1.5
Step-by-step explanation:
Given x is inversely proportional to 
, then the equation relating them is
y = 
← k is the constant of proportion
To find k use the condition when x = 8, y = 2
2 = 
= 
= 
( multiply both sides by 3 )
6 = k
y = 
← equation of proportion
When x = 15 , then
y = 
= 
= 
= 
= 1.5
