Answer:
6 is answer...............
Answer:
not sure for the 1st one but pretty sure 2nd one is B
Step-by-step explanation:
Over which interval(s) is the function decreasing?
I think the average spend is 11 km. i don't know for sure..
the discriminant formula is b^2-4ac
so plug the values from each equation into the formula and solve, the result is the value of the discriminant
if the number is negative, there are no real roots/x-int
if it is 0 there is one real root/x-intercepts
if it is positive it has 2 real roots/x-int
and to find the actual solutions you have to plug the values into the quadratic formula
