I wasn't in class so I need help solving the inequality 7/10n+14<49

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it. how many multiple-choice questions are on the test?

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?

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles