Stephanie spent half her weekly allowance at the movies. To earn more money, her parents let her clean the gutters for $4.00. What is her weekly allowance if she end with $13.00?

$18

Step-by-step explanation:

If weekly allowance is x

Half of it is x/2

Remaining half plus $4 is $13

x/2 + 4 = 13

Subtract by 4 both sides

x/2+4-4 = 13 - 4

x/2 = 9

Multiply both sides by 2

(x/2)*2 = 9*2

x = 18

Option: a is correct.

a .mean or median because there is no outlier

Step-by-step explanation:

Mean and median both try to measure the "central tendency" in a data set.

Clearly from the set of the values or data points:

{29 , 29, 29 , 28, 28, 27}

We could see that the data values are close too each other i.e. there is not outlier ( An outlier is a point that stand out of the rest points i.e. that value is either too high or low as compared to the other data points).

Here we have Mean=28.3333

and Median=28.5

Hence, the correct option is: option: a

a .mean or median because there is no outlier.