Answer:
vertex:(2,-4)
Focus:(2,-
)
Axis of symmetry :x=2
Directrixt: y=-
Step-by-step explanation:
Answer:
y = 45x miles
Step-by-step explanation:
Speed is the rate of change of distance with time. Mathematically,
speed = distance/time
Given that Darla travels at a constant speed of 45 miles per hour and for y miles, it takes her x hours then
45 = y/x
multiply both sides by x
45x = y
then the number of miles (y) Darla can drive in x hours
y = 45x (in miles)
Answer:
20
Step-by-step explanation:
it equals 19.99 but if you round it equals to 20