Mia is finally able to upgrade her cell phone. The one she wants costs $220. She pays $19.80 in taxes. What is the sales tax rate?

For the equation below, x is the input and y is the output. y = -4x + 3 if the input is -8, then the output is

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?