Answer:
option c
Step-by-step explanation:
Quadratic function f(x) = ax² + bx +c
Here the the co-efficient of x, that is a tells if the graph is wider or narrower.
1) a < 1 that is if a is decimal less than 1, then the graph is wider.
2) a > 1, then the graph is narrow.
Answer:
Step-by-step explanation:
<u>Proportional relationship formula is:</u>
a) Use point (1, 3.5) to find k:
b)<u> Unit rate is:</u>
c) <u>Point (8, 28) indicates:</u>
- Water level of 28 cm after 8 min
d) <u>x = 20, y =?</u>
Answer: 15
<u>Step-by-step explanation:</u>
Set up the proportion as follows:

Mia walked 7km/h so after 1 hour, she is 7 km north of the house of Julia
Samantha walked 11km/h so after 1 hour, she is 11 km west of the house of Julia.
The points where Mia and Samantha are after 1 hour , and the house of Julia form a right triangle with sides 7 and 11 km. The distance between the girls, is the hypotenuse of his triangle.
by the pythagorean theorem:

Answer: 13 km
Answer:
The answer is D which is 330