Mr. chaves spent $199.99 for a new smart phone $39.99 on a carrying case, and $59.99 on accesiories. the expression l-199.99l+l39.99l+l59.99l represents the total amount that mr. chaves spent. how much did he spend all together. first answer will get brainiliest

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