Adigital camera costs $185 and the sales tax rate is 5.7%. what is the total cost of the camera after tax. round to the nearest cent if necessary. a. $195.54, b. $185.00, c. $10.54, d. $174.46

To find the total cost of the camera after tax, you need to find how much it will cost after the price is increased.

To do this, you need to multiple the original price by 1.057.

The 1 means it keeps it's original price (it is an increase not a decrease) and the 0.057 is the 5.7% increase added on (to find a percentage of a number you need to divide the percentage by 100 (5.7 ÷ 100 = 0.057)) and multiply it by the original value. 

185 * 1.057 = 195.545 or $194.55

Answer = A. $195.54

I'm a bit puzzled here because they did not provide you with any measures of the other angles, so i am unable to provide a theorem or postulate to support my answer, but i'd say 90 degrees because it looks closer to a right angle than anything.