Answer:f(x) = 80x + 65f
Step-by-step explanation:
Since x = days and y = total rent, you've been given two points on your function: (5, 465) and (7, 625). We'll find the slope using those two points:
(625 - 465) / (7 - 5) = 160/2 = 80
Then, use m = 80 and one of the points to write the equation of your line in point-slope form:
y - y1 = m(x - x1)
y - 465 = 80(x - 5)
Convert that to standard form:
y = 80(x - 5) + 465
y = 80x - 400 + 465
y = 80x + 65
y - 80x = 65
In function notation, that's:
f(x) = 80x + 65
Answer:
(-4,6) is the vertex
Step-by-step explanation:
because it's either the lowest or highest point on the graph.
Its a rational number because whole numbers dont consist of decimals nor fractions
Answer:
x=5
Step-by-step explanation:
2 2/7 : (0.6x) :: 4/21 : 0.25
Hence, as it is in a perfect proportion, we may use the proportion method..
We multiply the extreme terms and the moderate(near) ones and equalise them.
Hence,
(2 2/7)×(0.25) = (0.6x × 4/21)
16/7 × 25/100 = 6x/10 × 4/21
16/7× 1/4= 3x/5 × 4/21
(16/7 × 1/4)/(4/21) =3x/5
16/7×1/4×21/4×5/3=x
1/7×21×5/3=x
x=5
