Answer:
P(t)= 9000(0.4)^t
Step-by-step explanation:
Generally, we have an exponential function as follows;
P(t)= I(1 - r)^t
This case represents a decay ( decrease in value)
from what we have;
I represents the initial value, whereas r is the rate of change
From the question, we have that the change rate is the fraction 3/5
Writing this as a decimal, it is 0.6
substituting this back into the equation, we have;
P(t)= I(1-0.6)^t
P(t)= I(0.4)^t
I in this case is 9,000
So we have it that;
P(t) = 9000(0.4)^t
Answer:
i hope my answer help u
Step-by-step explanation:
it will be 10 classrooms
cuz 75min. = 5 ×15min.
and he said that the custodian can clean 2 classrooms in 15 min.
so we will do 2 × 5 = 10 classroons in 75 minutes
Answer: D
Step-by-step explanation: because C &B connect and then A connects to B
Answer:
1. x = -3 or x = 5
2. x = 4 or x = 7
3. - 4 and 9
4. x = 4 or x = - 6
5. Unfortunately I got this one wrong, but put the answers above and you'll get an 80%
Answer:
2x+6
Step-by-step explanation:
you would get 2x+6 because you collect like terms and 3x minus 1x is 2x its minus because a negative is subtracting. and then 7 minus 1 is 6