7. the students in ms. chang's class decide to
order water bottles that advertise the walkathon.
maliik obtains two different quotes for the costs
of the bottles.
fill it up charges $4 per bottle.
bottles by bob charges $25 plus $3 per bottle.
a. for each company, write an equation maliik co
use to calculate the cost for any number
of bottles.
b. on the same set of axes, graph both equations from part a. which variable is the independent variable? dependent?

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

60: 45 =12: 9 =4: 3 so the answer is 4: 3