Charlene bought 4 pounds of pears. she paid for the pairs with a $20 bill and received $9.40 in change. what is the price per pound for the pears?

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x