For each call, a certain phone company charges a connecting fee, and then a cost per minute after that. how much does each call's connecting fee cost?
a.$0.02
b.$0.15
c.$0.18
d.$0.03

The answer is option C.$0.18. The line rises from 18 means it is the initial cost point.

Step-by-step explanation:

We can see that when x = 0, y = 18

This means at 0 minutes or when the call just connects, it is charged 18 pennies or cent.

So, each call's connecting fee cost is $0.18. The line rises from 18 means it is the initial cost point.

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation: