During a storm, the distance in feet between the lightning and your location was represented by f(x) = 1,200x, where x is the number of seconds between the lightning and thunder. at one point, you counted 4 seconds between the lightning and the thunder. how far were you from the lightning?

4800'

Step-by-step explanation:

It is 4800' because x = the number of seconds between the lightning and thunder and 1,200 is in feet. so, if there is four seconds between the time of the lightning and thunder then you can use the equation given f(x) or 1,200(x) to solve it. to do this you supplement the x with 4 which gives you 1,200(4) or the same as 1,200 · 4 = 4800ft.

answer: ok

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,