Items bought by a trader for $80 are sold for $100. the profit expressed as a percentage of cost price is

2.5%
20%
25%
50%

Which symbol makes the steam in true 0.7 > 0.77

Solve the system of equations. y= 2x y= x^2 - 15

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.