Question

34 Sat purchased some art supplies and cord stock in order to make greeting cards. The graphbelow shows the relationship between the number of cards Sat makes and the total cost etthe materials used te make the cardsCost of Noking Greeting CardsTotal Cost(dollars)2 4 6 8 10Number of Cards MadeBased on the graph what will be the total cost of making 25 greeting cards?*2.50G$50.00N $52.50$15.00

Answer 1

step 1

Find the slope

we have the points

(3,4) and (7,6)

m=(6-4)/(7-3)

m=2/4

m=$0.5 per card

the equation of the line in slope intercept form is equal to

y=mx+b

we have

m=0.50

b=?

point (3,4)

substitute

4=0.5(3)+b

b=4-1.50

b=2.50

y=0.50x+2.5

so

For x=25 cards

substitute

y=0.50(25)+2.50

y=15.00

answer is the option J