Plz urgent 30 ! which of the following functions maps 3 to -5 f(x)=4-x^2 f(x)=x-5 f(x)=-x+2 f(x)=x+8

F(x)=4-x^2

Step-by-step explanation:

I am assuming that x=3 and y=-5

Put in x =3

F(3)=4-3^2 = 4-9  =-5    Yes

F(3)=3-5   = -2  No

F(3)=-3+2 = -1  No  

F(3)=3+8=11  No

x ≥ 18 is your answer

step-by-step explanation:

let "a number" = x

(2/3)x + 17 ≥ 29

isolate the variable (x). do the opposite of pemdas (parenthesis, exponent (& root), multiplication, division, addition, subtraction).

first, subtract 17 from both sides.

(2/3)x + 17 (-17) ≥ 29 (-17)

(2/3)x ≥ 29 - 17

(2/3)x ≥ 12

next, multiply 3/2 to both sides to isolate the x

(3/2)(2/3)x ≥ 12(3/2)

x ≥ 12(3/2)

simplify. multiply, then divide

x ≥ (12 * 3)/2

x ≥ (36)/2

x ≥ 18

x ≥ 18 is your answer

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