The range of the function f(k) = k2 + 2k + 1 is {25, 64}. what is the function’s domain?

Domain is [-9,-6] U [4,7]

Step-by-step explanation:

Range is {25, 64}. Range is the y value

LEts plug in 25 for f(k) and solve for k

Subtract 25 on both sides

Product is -24 and sum is +2. factors are 6 and -4

Do the same and solve for x when f(x)= 64

Subtract 64  on both sides

Product is -63 and sum is +2. factors are 9 and -7

We got k values, -9,-6,4,7

Domain is [-9,-6] U [4,7]

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step-by-step explanation:

1+2+3+4+5+6+7+8+9+10 = 55

2*10 = 20

55-20 = 35

linear

step-by-step explanation: