Question

Evaluate each algebraic expression for the given value of the variable1).16 – x at x = 5; 2).b^2 at b = 4; 3).3n at n = 11; 4).p^3 at p = 2; 5).r + 4 at r = 13; 6).1 c – 9 at c = 16; 7).4/m +1 at m =1; 8). c – 9 at c = 16; 9).27 s at s = 9; 10). q^3 + 4 at q = 3

Answer 1

Evaluate each of the following;

(1)

`\begin{gathered} 16-x\text{ (at x=5)} \\ 16-x=16-5 \\ 16-x=11 \end{gathered}`

(2)

`\begin{gathered} b^2\text{ (at b=4)} \\ b^(22)=4^2 \\ b^2=16 \end{gathered}`

(3)

`\begin{gathered} 3n\text{ (at n=11)} \\ 3n=3(11) \\ 3n=33 \end{gathered}`

(4)

`\begin{gathered} p^3\text{ (at p=2)} \\ p^(3=p)=2^3 \\ p^3=8 \end{gathered}`

(5)

`\begin{gathered} r+4\text{ (at r=13)} \\ r+4=13+4 \\ r+4=17 \end{gathered}`

(6)

`\begin{gathered} c-9\text{ (at c=16)} \\ c-9=16-9 \\ c-9=7 \end{gathered}`

(7)

`\begin{gathered} (4)/(m)+1\text{ (at m=1)} \\ (4)/(m)+1=(4)/(1)+1 \\ (4)/(m)+1=4+1 \\ (4)/(m)+1=5 \end{gathered}`

(8)

`\begin{gathered} c-9\text{ (at c=16)} \\ c-9=16-9 \\ c-9=7 \end{gathered}`

(9)

`\begin{gathered} 27s\text{ (at s=9)} \\ 27s=27(9) \\ 27s=243 \end{gathered}`

(10)

`\begin{gathered} q^3+4\text{ (at q=3)} \\ q^3+4=3^3+4 \\ q^3+4=27+4 \\ q^3+4=31 \end{gathered}`