The south beach diet was given to a volunteer group of 25 people who were at least 50 pounds overweight. 18 people from the group lost at least 20 pounds. what should we conclude about the effectiveness of the diet?

nothing, since the group knew they were using the diet.
the diet is effective in 72% of people.
nothing, since the 25 people were not an srs.
nothing, since there was no control group.
people overweight by at least 50 pounds will lose more than 20 pounds on the diet.

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

Write an equation in slope intercept form of the line passes through the given point and is parallel to the graph of the given equation (0,0); y=3/8 x+2

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave