First let's state the given parameters:
Number of Elena's guest = g
The expression Elena wrote on difference in cost of two venues = (62 + 35g) - (56 + 27g)
First venue:
Let the booking fee = B
the Cost per guest = C
We are told the cost of each venue is equal to the sum of the booking fee and the result of the multiplication of number of guest and the cost per each guest.
Let the cost for the first venue = Y
Y = Cg + B
Second venue:
Let the booking fee = A
the Cost per guest = D
Let the cost for the first venue = Z
Z = Dg + C
The difference between the two venues:
(Cg + B) - (Dg + C) (this is the equivalent expression)
In expression presently written, there is no value given. Hence we represented the values with variables. We can see the cost is in the form of a linear expression:
y = mx + c
Also the number of guest is represented by g in the new expression.
Answer:
4 1/8km
Step-by-step explanation:
if you have done 3 1/4km you can multiply the fraction by 2 so you get 3 2/8.
so now we have 2 5/8km and 3 2/8.
(its always easier to have the fractions the same denominator)
now we add the whole numbers first.
2 km + 3km = 5km.
now the fractions.
5/8 km + 2/8 km = 7/8km.
now add them both together and we get.
5 7/8 km.
take that answer away from 10.
we get 4 1/8km.
8-15 is -7 and 8+(-15) is also -7 because this equation can also be written as 8-15 but I'm not really sure how to explain how they are different. Sorry