Question

8th grade math; Help me out!

(1 pt) Evaluate the expression when p = –5 and q = 10

15 + 3q ÷ p

A. 9
B. 36
C. -9
D. -36

Also, how did you get your answer? Please explain, thanks!

Answer 1

Use PEMDAS for the order of operations:

Parentheses
Exponents
Multiplication/Division
Addition/Subtraction

Plug your p and q values into the equation:


`15 + 3(10) / -5`

3(10) includes parentheses, so operate on that first:


`3 * 10 = 30`

`15 + 30 / -5`

30 / -5 is division, so operate on that next:


`30 / -5 = -6`

`15 + -6`

Finally, we have addition, so operate on that last:


`15 + -6 = 9`

The answer is A. 9.

Answer 2

A. 9
15+3*10÷-5
15+30÷-5
15-6
Always follow PEMDAS