Can someone check my answer for this question?

the following table contains the monthly expenses for jim's breakfast at a local restaurant.

january february march april may june
$48.28 $48.58 $41.35 $48.28 $43.45 $45.26

what is the total expense? $ [275.20]

what is the monthly average? $ [45.87]

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases