All of the following expressions are equal except
a. 7^2/7^3
b. 7
c. 7^-1
d. 1/7

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?