Does anyone know the answers to lesson 2 semester a exam, algebra 2 a. unit 8. i really need your !

Idont get this question can someone me solve it? ** the distance light travels in one second (1 light second) is about 1.86 ×10^5 mi. saturn is about 475 light-seconds from the sun. about how many miles from the sun is saturn..my guess is 8.83* 10^7 you so much

On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2