What quantity of 72% hydrochloric acid solution must be mixed with a 23% hydrochloric acid solution to produce 1181.44 mL of 41% solution?

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)