If we want to put a three-stage rocket into orbit 100 miles above the earth’s surface, a finalvelocity of approximately is required. Suppose that each stage is built with astructural factor and an exhaust speed of .(a) Find the minimum total mass of the rocket engines as a function of .(b) Find the mass of each individual stage as a function of . (They are not equally sized!)

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

it would be 3 ÷by 6 because the number on each side