A function is one-to-one which means every x-value or member of the domain can only have exactly one output. but, there is no law that says they cannot share an output.
think of it like bridges from inputs to outputs. for it to be a function, there has to be one bridge leaving each input. we dont care where it goes, just that it goes.
Take it one step at a time. First solve for how many white blood cells.
10 to the third power equals 1000. 7 times 1000=7000.
You then want to multiply 7000 by 6 times 10 to second power. 10 to the second power equals 100, and 100 times 6 equals 600. 600 times 7000 equals 4200000. Does this make sense? Correct me if I'm wrong.
Let say the number of the months is t, the total amount of depo is a and a0 is the initial amount of money deposited. You can put it like this:
a= f(t) = a0 + x*t
You can solve the equation by inserting two of any t value. If you use f(8)-f(4) it will be
a0+ x(8)= 2500
a0+ x(4)= 1500
___________-
8x- 4x= 1000
4x= 1000
x=250
Then the new equation would be:
a= a0 + 250*t
Putting f(4) value you can find a0
1500= a0+ 250*4
a0=1500-1000=500
The final equation would be
a= 1000+ 250*t
The
answer is 61 one because 64-3