The Harmony High School Cheerleaders have contacted several vendors for spirit ribbon prices. Varsity Blues has offered to sell its ribbons for a fixed down payment of $20 and an additional charge of 50 cents per ribbon. Spirit Town has offered to sell its ribbons for a fixed down
payment of $60 and additional charge of 25 cents per ribbon. From the description of the two offers, find an algebraic rule (equation) that will
determine the cost of n ribbons from each vendor.
О а
Ob
Ос
Od
Оe
Varsity Blues (50n)(20) Spirit Town (25n)(60)
Varsity Blues 20+.5n Spirit Town 60+.25n
Varsity Blues 20+50n Spirit Town 60+25n
Varsity Blues 20n+50n Spirit Town 60n+.25n
Varsity Blues (20+50)n Spirit Town (60+25)n

a.   we have two

lines:   y = 4-x   and  

y = 8-x^-1

given two simultaneous equations that are both to be

true, then the solution is the points where the lines cross. the intersection is

where the two equations are equal. therefore the solution that works for both

equations is when

4-x = 8-x^-1

this is where the two lines will cross and that is the

common point that satisfies both equations.

b.   4-x = 8-x^-1

  x           4-x       8-x^-1

-3           7        

8.33

-2           6         8.5

-1           5         9

  0           4        

-

  1           3        

7

  2           2        

7.5

  3           1         7.67

the table shows that none of the x values from -3 to 3 is

the solution because in no case does

4-x = 8-x^-1

to find the solution we need to rearrange the equation to

find for x:

4-x = 8-x^-1

multiply both sides with x:

4x-x^2 = 8x-1

x^2+4x-1=0

x= -4.236, 0.236

therefore there are two points that satisfies the

equation.

find y:  

x=-4.236

y = 4-x   = 4 – (-4.236)

= 8.236

y = 8-x^-1 =   .236)^-1

= 8.236

x=0.236

  y = 4-x   = 4 – (0.236) = 3.764

y = 8-x^-1 =   8-(0.236)^-1

= 3.764

thus the two lines cross at 2 points:

(-4.236, 8.236) & (0.236, 3.764)

c.   to solve

graphically the equation 4-x = 8-x^-1

we would graph both lines: y = 4-x   and   y

= 8-x^-1

the point on the graph where the lines cross is the

solution to the system of equations.

just graph the points on part b on a cartesian coordinate

system and extend the two lines.   the

solution is, as stated, the point where the two lines cross on the graph.

step-by-step explanation:

mark brainliest!

well

44-3-3-3=35

35+4+4+4+4=51

so the ansewr would be 51 degreesat 7: 00

i think its 7.6

if so your welcome