Michael bought a stereo on sale for 20% off the regular price. the regular price of the stereo was $180. what was the sale price of the stereo?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries