Lena is taking four classes. in one class, she is getting an 83. in another, she is getting another 83. in the third class, she is getting a 91. in her fourth class, she is getting an 89. what is her gpa?

(83 + 83 + 91 + 89)/4

= 346/4

= 86.5

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3