Question

Evaluate each expression

a)
`x` + 5,when
`x` = 4
b) 6
`y` - 15 , when
`y` = 2
c)2
`w` + 8, when
`w` = 5
d -3
`z` - 7, when
`z` = -6

Answer 1

A) 4+5= 9
B) 6(2)-15=-3
C) 2(5)+8= 18
D) -3(-6)-7=11

Answer 2

`{ \qquad\qquad\huge\underline{{\sf Answer}}}`

Here we go~

A.) x + 5 ; when x = 4

`\qquad \sf  \dashrightarrow \: x + 5`

[ put x = 4 ]

`\qquad \sf  \dashrightarrow \: 4 + 5`

`\qquad \sf  \dashrightarrow \: 9`

B.) 6y - 15 ; when y = 2

`\qquad \sf  \dashrightarrow \: 6y - 15`

[ plug in the value of y ]

`\qquad \sf  \dashrightarrow \: 6(2) - 15`

`\qquad \sf  \dashrightarrow \: 12 - 15`

`\qquad \sf  \dashrightarrow \: - 3`

C.) 2w + 8 ; when w = 5

`\qquad \sf  \dashrightarrow \: 2w + 8`

[ put w = 5 ]

`\qquad \sf  \dashrightarrow \: 2(5) + 8`

`\qquad \sf  \dashrightarrow \: 10 + 8`

`\qquad \sf  \dashrightarrow \: 18`

D.) -3z - 7 ; when z = -6

`\qquad \sf  \dashrightarrow \: - 3z - 7`

[ put z = -6 ]

`\qquad \sf  \dashrightarrow \: - 3( - 6) - 7`

`\qquad \sf  \dashrightarrow \: 18 - 7`

`\qquad \sf  \dashrightarrow \: 11`