The following pairs of equations are equivalent. Determine the property that was used to write the second equation.
a. 2(x + 4) = 14 - 6x and 2x + 8 = 14 - 6x

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Find the domain and range of the following function f(x) = 51x - 21+ 4

How do i i solve this equation? -18 = x/3 + 3