There are 13 girls in a class of 27 what percent are boys

52% Boys

Step-by-step explanation:

First find what the % of the girls are by dividing the 13 girl number by the 27 classmate number. which is 48% (rounded) then the rest will be boys.  100% - 48% (girls) = 52% Boys.  

OR  (love math)

Take the total of classmates (27) subtract girls (13) there are 14 boys.  Then find the % of boys in the class this way.  14 boy number divided by the 27 classmates.  52% (rounded).    

a. she will receive a refund of $278.

step-by-step explanation:

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.