Help Please !!! i will medal and fan you !!!

Question

Help Please !!!  i will medal and fan you !!!

marcelie · Answer

attachment

marcelie · Answer

21 and 23

marcelie · Answer

lool  peachhh

marcelie · Answer

okie

anonymous · Answer

for 21, you plug in the points into the model function, then you should get a system of equations that you can solve for C and b.

marcelie · Answer

what do i plug ?

anonymous · Answer

the points on the graph. x coordinate for x, y coordinate for f(x)

marcelie · Answer

mmm k wellt he graph is graphed though

anonymous · Answer

yeah, you take the two points they gave you on the graph and plug in the numbers into the equation they gave you in the question, $f(x)=Cb^x$

anonymous · Answer

so when you plug in (3, 24) you get $24=Cb^2$

anonymous · Answer

sorry, $24 = Cb^3$

anonymous · Answer

plug in (1, 6) to get the other equation

marcelie · Answer

so itll loook like this

marcelie · Answer

wait... whre did the 3 come from?

anonymous · Answer

(3, 24) is a point on the graph you posted

marcelie · Answer

oh okay so what does c and b represent ?

anonymous · Answer

C and b are what you're solving for. In general, exponential function are used to show the general formula for a geometric sequence. C is the first term of the geometric sequence and b is the common ratio, if that's what you were asking

marcelie · Answer

oh  itll be |dw:1455579597718:dw|