Question

Evaluate 8 - 4.7y - x
when y= -1 and x= 2.

Answer 1

substitute in the values for y and x into the equation.

so..

8 - 4.7(-1) - (2)   solve the equation 
8 + 4.7 -2 
12.7 - 2 
10.7 

Answer 2

If you substitute the values in to the equation, you will get:
8 - (4.7 * -1) - 2 and that will get you to...
8 - (-4.7) - 2
8 + 4.7 - 2
= 10.7