Expand and simplify
(x + 1)(x + 7)

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Write the equation in logarithmic form e^x=403.429

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]