1. which number makes this equation true? v 2 + 10v + 16 = (v + 8)(v + ? ) (1 point) 2 4 6 8 2. what is the factored form of x 2 + 6x + 8? (1 point) (x + 5)(x + 3) (x + 4)(x + 2) (x + 7)(x + 1) (x + 3)(x + 3) 3. what is the factored form of x 2 – 7x + 12? (1 point) (x – 5)(x – 3) (x – 6)(x – 1) (x – 5)(x – 2) (x – 4)(x – 3) 4. the area of a garden is given by the trinomial g
2 – 2g – 24. the garden’s length is g + 4. what is the garden’s
width? (1 point) g – 2 g – 6 g – 8 g + 2 my answer 1. b 2. c 3. d 4. a check my work

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?