A composition is operation between function that consist in replacing the independent variable of the first function, in this case, for . Common notations for composition between functions are and . If we know that and , then .
<span>Well 68/80 as a percent is 85 % .I got that by dividing 68 by 80 and them multiplying by 100. 100-85= 15. So therefore the dress decreased in price by 15%. </span>