Find the sum.

(14x2 + 7x) + 9x2 =

select one of the options below as your

a.
30x2
b.
30x5
c.
22x2 + 7x
d.
23x2 + 7x

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points

Will mark name all segments skew to bc

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?