So which is equivilentpemdas
(8-6x+12)(20-6x)multiply/distribute1/4(20-6x)5-6/4x=5-3/2x=-3/2x+5
the answer is D
so mean is equivilent to average
per minute means x feet for every one minute=xfeet/1miin=x/1
so just divide -378/7=-54
mean change in altitude-54 feet per minute
Answer:
The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y

I'm not sure what methods you've learned up to this point but one option is to apply separation of variables:

and then integrate from there,

exponentiate to isolate y,

Apply exponent rule,

rename this e^c as some new constant, perhaps A,

This A can only be positive, non-zero, but absorbing the plus/minus fixes that restriction,

Use your initial information to solve for this unknown value A,

solving for A, dividing by the exponential,

So we get a final result of

apply exponent rule again to get a better looking answer, and factor,

Lemme know if too confusing.
The answer is D because you have 7 options (0, 1, 2, 3, 4, 5, 6) and they all have an equal chance of being generated.
Answer:
2/5 is the smallest fraction. Your welcome.