Last year there 1,435 8th grade students enrolled at your school. this year there are 1,220. what is the percent change in the number of 8th grade students?

Astudent was asked to find the square of 7x+3. the student quickly wrote (7x+3)^3= 49x^2+9. identify the student's error and provide the correct answer.

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?

Twice the sum of a number and 2 is equal to three times the difference of the number and 8. find the number.