Trevor bought 8 gallons of paint to paint his house. he used all but 1 quart. how many quarts of paint did trevor use?

Given that (x-3) is a factor of f(x)=x^3+ax^2-x-6, find a and hence the number of real roots or the equation f(x)=0

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

Use the x-intercept method to find all real solutions of the equation. x^3-10x^2+27x-18=0