doctors are interested in seeing what type of arch support helps the most to alleviate foot pain. twenty five volunteers are asked to wear one type of arch support one week and rank their level of pain on a scale from one to ten. the next week, they wear another type of arch support and once again rank their pain. the type of arch support that each participant used the first week was randomly selected from the two types. which arch support is better?

Which data set has a greater spread? why? set a: {38, 12, 23, 48, 55, 16, 18} set b: {44, 13, 24, 12, 56} has a greater spread because .

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

Astudent found the solution below for the given inequality. |x-9|< -4 x-9> 4 and x-9< -4 x> 13 and x< 5 which of the following explains whether the student is correct? -the student is completely correct because the student correctly wrote and solved the compound inequality. -the student is partially correct because only one part of the compound inequality is written correctly. -the student is partially correct because the student should have written the statements using “or” instead of “and.” -the student is completely incorrect because there is no solution to this inequality.