Answer:
= 6 typists
Step-by-step explanation:
Well, 2 can type 2 in 2 mins,
So, 1 can type 2 in 4 mins.
So, 1 can type 18 in 36 mins.
So, 2 can type 18 in 18 mins.
So, 6 can type 18 in 6 mins.
Answer:
The answer to this question is -21.
Step-by-step explanation:
f(g(-3)) says "f at g at -3".
"Evaluating the value of g if x is -3, Then put the value of x into the f function".
g(x) = x - 4
g(-3) = 3x +5
g(-3)=3*(-3)+5
g(-3)=-15+5
g(-3)=-10.
put -10 into the f.
f(x)=2x-1
f(-10)=2*(-10)-1
f(-10)=-20-1
f(-10)=-21.
so f(g(-3))=-21.
If it looks like this
y = 161*(0.725)^t then it's a decay. Reason: the base is under 1. Try a couple of values for t say 0,1,2
y = 161 * (0.725)^0
y = 161
y = 161 * (0.725)^1
y = 161 * 0.725
y = 116.7
y = 161 * (0.725)^2
y = 161 * (0.5256
y = 84.63
You can see that the function is steadily getting smaller. Remember if the base is under 1 and more than 0 the function decays. If it is greater than 1 then the function grows.
Just to make sure we understand what I'm saying
0 < base < 1
y = a ( base)^power.
