Need help with radical expressions and functions

Answers only

Simplify the expression below. Assume all variables are nonnegative real numbers.:

$\sqrt{25 y^{2}}$

c. -5y

d. $5 open vertical bar y close vertical bar comma space minus 5 open vertical bar y close vertical bar$

Approximate the value for the expression below. Round to three decimal places, if necessary.

$\sqrt{18}$

c. $4 open vertical bar x squared close vertical bar$

d. no real answer

Simplify the expression below. Assume all variables are nonnegative real numbers.
(Hint: Factor the polynomial).

$\sqrt{x^{2} + 4 x + 4}$

$x plus 2 x plus 2$

$open vertical bar x plus 2 close vertical bar$

x+2

Simplify the expression below. Assume all variables are nonnegative real numbers.

$\sqrt[4]{(3 x - 1)^{4}}$

b. 12x-4

c. 3x-1

d. no real number

Find f(-1) for the function $f (x) = \sqrt{x + 5}$

a. $f left parenthesis x right parenthesis equals cube root of x plus 1$

b. $f left parenthesis x right parenthesis equals cube root of x plus 1 end root$

c. $f left parenthesis x right parenthesis equals cube root of x minus 1 end root$

d. $f left parenthesis x right parenthesis equals cube root of x minus 1$

Simplify the expression below. Assume all variables are nonnegative real numbers.:

$\sqrt[3]{- 27 r^{6}}$

b. $negative 3 r squared$

c. $3 open vertical bar r squared close vertical bar$

d. No Real Answer