Blake has a collectors' card that he bought for $42.00. the card is now worth $87.00. what is the percent of change in the value of the card? round answers to the nearest percent.

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

What is the relationship between all triangles that can be drawn given the same three angles

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.