## wintersuntime one year ago Can someone be nice enough to help me please on this question -> Evaluate each expression if r=-3, s=4 and t=7

1. wintersuntime

A. r2+√s

2. mathstudent55

The first step is to replace the variables with their values. |dw:1439255162674:dw|

3. mathstudent55

Now do the arithmetic. (-3)^2 = (-3)(-3) = ? $$\sqrt 4 = ?$$

4. wintersuntime

2

5. wintersuntime

So total is -7

6. wintersuntime

@mathstudent55

7. zzr0ck3r

what is $$(-3)^3=(-3)(-3)=?$$

8. zzr0ck3r

hint: two negatives multiplied together give a positive. What is $$\sqrt{4}$$? hint: it is 2. Add those numbers to get ? hint: it starts and ends with a $$1$$, and there are only two digits.

9. mathstudent55

|dw:1439338970853:dw|

10. wintersuntime

Thanks