Abike and helmet worth $320. the bike is 7 times more than helmet. find the value

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Me asap! what is the slope of this line? enter your answer in the box.

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared