Ashley is doing some math exercises in a website called Khon Academy. In Khon Academy, you have to get at least 70% of the problems in an exercise right in order to gain proficiency. So far, Ashley has answered correctly 3 out of 7 times. Suppose she answers all of the following questions correctly, how many additional questions does she have to solve to gain proficiency?
Write an inequality that models the number of additional questions Ashley has to get right in order to gain proficiency. Use q to represent the number of additional questions.
Solve the inequality and complete the sentence.

Question

Ashley is doing some math exercises in a website called Khon Academy. In Khon Academy, you have to get at least 70% of the problems in an exercise right in order to gain proficiency. So far, Ashley has answered correctly 3 out of 7 times. Suppose she answers all of the following questions correctly, how many additional questions does she have to solve to gain proficiency?
Write an inequality that models the number of additional questions Ashley has to get right in order to gain proficiency. Use q to represent the number of additional questions.
Solve the inequality and complete the sentence.

beccab003 · Answer

I don't understand how to set up this equation. Please help!