Evaluating and solving functions Use the function f(x)=240(0.7)^x to answer the following questions. Round your nearest answers to two decimal places.
Evaluate f(7) f(7)=
Determine x when f(×)=120

Evaluate f(7)

Determine x when f(×)=120

We can derive both sides by 240 and we got:

Now we can apply natural log on both sides and we got:

And if we solve for the value of x we got:

And then the value of x = 1.943

Step-by-step explanation:

We have the following function given:

Evaluate f(7)

And we want to find so we just need to replace x=7 and we got:

Determine x when f(×)=120

And for the second part we want to find a value of x who satisfy that the function would be equal to 120 and we can set up this:

We can derive both sides by 240 and we got:

Now we can apply natural log on both sides and we got:

And if we solve for the value of x we got:

And then the value of x = 1.943

y = i/2 xtnop + (3i/2 tnop+ 1)

step-by-step explanation:

the picture is the step by step explanation.