the function f is defined by f(x)=150/x-z where z is a constant. find z if the value of f at x=1/5 is equal to 250

x = -1

Step-by-step explanation:

f() = 120, therefore we can create this equation:

120 = 150 ÷ ( - z)

cross-multiply to get: 24 - 120z = 150

-120z = 126

z = -1

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

70

step-by-step explanation: