Answer:
157.5
Explanation:
1) Substitute the values of x and y into the equation
We given a question like this the first thing we have to do is to put the values you are given into the equation!
- x = 9 7(9)
- y=2.5 7(9)(2.5)
The brackets mean the same as multiply so to write it down properly it would be 7 × 9 × 2.5
2) Solve
We have the final equation so now we just have to carry it out...
- 7 × 9 = 63
- 63 × 2.5 = 157.5
Hope this helps, have a great day!!