EQUALITY OR INEQUALITY: Given are sets of mathematical statements. Shade A if the mathematical statement is an example of linear equation and Shade B if the mathematical statement is an example of linear inequalities in two variables. 1.y = 7x + 21 6. 10-5y 2 7x 2. y ≤ 7x + 21 7. y = 5x + 20 3. 3y - 7 = 5x 8. 3x + 4y < 15 4. 3y-7 < 5x 9. 3x + 4y = 15 5. 10-5y = 7x 10.y > 5x + 20

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

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?