Annie earns $15 per hour babysitting. How many hours will it take her to earn $60?

4 hours

Step-by-step explanation:

15 x 4 = 60

$60

4 hours.

Step-by-step explanation:

We are looking for the amount of money Annie will need to earn 60.

Let the equation be 15+x=60.

The equation could be represented as 15+x=60, or 60-15=x.

The easier solution would be to subtract.

When we subtract 60-15 we get 45, therefore the value of x is 45 making the statements true.

15+45=60 and 60-15=45 as well.

We know she earns 15 an hour, so we have to see how many 15 we can add up to get to 60.

15+15+15+15=60, therefore she will need to work 4 hours.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225