Elizabeth, heather, and erin share the same birthday. they’ve decided to join together to have one big birthday party. the event location says it will cost $70 for the rental of the space and $15 per guest. each girl invites x number of guests, including themselves in their guest count.
the girls have each written a different correct expression to represent the total cost of the party. explain how each of the 3 expressions below represents the total cost.
(a) elizabeth’s expression: 15x + 15x + 15x + 70
(b) heather’s expression: 15(x + x + x) + 70
(c) erin’s expression: x(15 + 15 + 15) + 70

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

idk wbu

step-by-step explanation: