Which function is increasing?
a. f(x) = (0.4)^x
b. f(x) = (1/4)^x
c. f(x) = (1/2)^x
d. f(x) = 4^x

What is the slope of a line that is perpendicular to y = 3x + 1

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?