Plug in the 6 and -1 to get the answers
f(6)=120
f(-1)= 8
The answer would be B (y=1.25x
Explanation:
If you are trying to find out the total cost you would multiply the number of pounds you bought (x) by the cost per pound (1.25) in order to get ur answer
When you put it into the substitute equation
you’d get
y(total spent)= 1.25(cost per pound) x(number of pounds)
Hope this helped!
Unfortunately you cannot use logs to solve this.
However, it shouldn't take too long to use guess-and-check to see that
Showing that x = 2 is the solution to the equation.
You can use a graphing calculator to graph out and . The two curves cross at (2,13). The x coordinate of that intersection is what we're after. GeoGebra and Desmos are two free options you can pick from in terms of a graphing calculator.