Question

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

Answer 1

10

Explanation:

5 · (3r - 10)

If r = 4, this expression becomes 5 · (3[4] - 10), or 60 - 50, or 10.

Answer 2

the value of the expression is 10

Explanation:

The expression means the product of 5 and the difference of three times r minus 10.

'r' represents the variable

three times 'r' is 3r

for minus 10, subtract 10 from 3r

`3r-10`

the product of 5 and the difference of three times r minus 10.

`5(3r-10)`

Now evaluate the expression when r=4

Plug in 4 for 'r' in the expression we got

`5(3r-10)`

`5(3(4)-10)`

`5(2)`

10