Amixture of fuel for a certain small engine should be 4 parts gasoline to 1 part oil. if you have 5 quarts of, oil how many quarts of gasoline will you need for a correct mixture

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning