An item costs $440 before tax, and the sales tax is $30.80. Find the sales tax rate. Write your answer as a percentage.

Choose the equation that represents the graph below: (1 point) graph of a line passing through points negative 3 comma 0 and 0 comma 3 y = x − 3 y = −x + 3 y = −x − 3 y = x + 3 will award !

Factor the polynomial expression x6 – x3 – 20

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?