How much is the sales tax on $29.50 worth of goods if the tax rate is 7%

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

What is x and y intercepts for y=x+7