Shania sells two grades of green tea. She paid $5 per pound for the higher grade and $1.50 per pound for the lower grade. She decided to sell the mixture for $4.93 per pound. How many pounds of higher quality tea should be added to 10 pounds of lower quality tea if she sold the entire mixture for a profit of $34.15?

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

How many 2/5s are in 1 and 1/2 plz someone me right now

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?