4. the graph of an exponential function is given. which of the following is the correct equation of the function? 5. compute the exact value of the function for the given x-value without using a calculator. show your work for full credit. (2 points) f(x) = 7x for x = 2

B

Step-by-step explanation:

EDGE 2020

For the first point, remember this simple rule: every exponential function always returns when evaluated at . In fact, for every possible base .

So, we can see that the graph of the exponential passes through the point where appears to be between 1 and 2. So, the only feasible option would be , because it passes throught the point because .

The other functions are wrong because:

As for the second question, you simply have to plug in the values: the function

means that you have to choose an input, x, and use it as exponent for 7. So, if you choose x=2, it means that you have to give exponent 2 to 7, i.e. you replace the x with the specific value, 2.

So, the expression becomes

the length of o'p' is .

step-by-step explanation:

it is given that the quadrilateral m'n'o'p' is the image of quadrilateral mnop after dilation.

the center of dilation is origin and the scale factor is 1.5.

in dilation the image and preimge are similar figures. it means the sides of image and preimage are proportional.

the scale factor is defined as

the scale factor is 1.5.

multiply both sides by op.

note: if the value of op is given, then multiply the value of op with 1.5 to get the length of side o'p'.

therefore length of o'p' is .