Find the function value, if possible. (If an answer is undefined, enter UNDEFINED.) f(x) =

−3x − 3, x < −1

x2 + 2x − 1 , x ≥ −1

(a)

f(−4)

(b)

f(−1)

(c)

f(1)

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

the answer is  

a.

28 ft2

step-by-step explanation: