Question

Evaluate the function.
f(x) = -4x² + 7x
Find f(5)

Answer 1

-65

Explanation:

Answer 2

Given ~

`\tt \: f(x) = - 4 {x}^(2) + 7x`

`\:`

put x=5 in given function ~

`\:`

`\tt \: f(5) = - 4(5) ^(2) + 7(5)`

`\:`

`\tt \: f(5) = - 4(25) + 7(5)`

`\:`

`\tt \: f(5) = -100 + 35`

`\:`

`\underline{\boxed{\red{ \tt f(5) = - 65}}}{\green✓}`

`\:`

hope helps ~