An item costs $320 before tax, and the sales tax is $12.80. Find the sales tax rate.

4%

Step-by-step explanation:

Sales tax over original price

12.80 / 320* 100 = 4%

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

1. minimum

2. 6400

3. eight

hope this !