Answer:
The expression
means the product of 5 and the difference of three times r minus 10. If r= 4, the value of the expression is
.
Explanation:
The product of 5 and the difference of three times r minus 10 would look like this:

If you substitute 4 for
, you get
![5[3(4)-10]](https://img.qammunity.org/2021/formulas/mathematics/high-school/mq5dmkvmrrwk5v4riw8kd4k47wqsffw3jd.png)
Multiply 3 and 4

Subtract

Multiply
