Arectangular piece of cardboard is a = 11 in. longer than it is wide. squares 2 in. on a side are to be cut from each corner and then the sides folded up to make an open box with a volume of 84 in3. find the length and width of the piece of cardboard.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?