A smart phone costs $149.99 before tax. The the tax on the phone is 7 percent.What is the total cost of the smart phone?Round your answer to the nearest cent.
7%= 0.07 so you need to multiply 0.07149.99 or 149.997%
that's 10.4993 which is 10.50, so that's the tax
add 10.50 to the cost 149.99
which is 160.50