ANSWER
8 minutes
EXPLANATION
We know that the cost of using the internet in dollars is given by,
Where x is the number of minutes spent on the internet.
In this problem, we have to find how many minutes will 6 dollars buy. In other words, we have to find x for y = 6. To solve the given equation for x, we have to multiply both sides by 4,
And divide both sides by 3,
So, for y = 6, x is,
Hence, $6 will buy 8 minutes.
Answer:
One year ago, he had height of 150 cm.
Step-by-step explanation:
We have to model this situation.
The first step is having everything as the same unit. I am going to work in meters initially.
Each m is 100 cm. So 10cm = 10/100 = 0.1m.
I am also going to say that his height one year ago was x.
His height is now 1.6m, which is 10cm = 0.1m above his height last year, which was x. So
His height last year was 1.5m.
In centimeters, that is 1.5*100 = 150 cm.