Question

Evaluate the expression given the replacement values.

8x−2y for x=4 and y=−7.
10xy

Answer 1

`\\ \sf\bull\longmapsto 8x-2y+10xy`

`\\ \sf\bull\longmapsto 8(4)-2(7)+10(4)(7)`

`\\ \sf\bull\longmapsto 32-14+280`

`\\ \sf\bull\longmapsto 18+280`

`\\ \sf\bull\longmapsto 298`

Answer 2

-23/140

Step-by-step explanation:

Substitute: