Becca has a balance of $22.90 at the beginning of may for clothes. her allotment for the month is $50.00. she buys a two new outfits at a really good sale for $85.50. what is the balance for this category at the end of may?

Add the balance and allotment:

22.90 + 50.00 = 72.90

This is how much she can actually spend.

She spent 85.50.

Subtract the two:

85.50 - 72.90 = 12.60

Since she spent more than she actually could be balance would be a negative number.

The balance would be  - $12.60

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).