A gift basket that contains jars of jam and packages of bread mix costs $45. There are 8 items in the basket. Jars of jam cost $6 each, and packages of bread mix cost $5 each. Wrte and solve a system of liner equations to find the number of jars of jam and the number of packages of bread mix in the gift basket.

5 jams and 3 bread mixes

Step-by-step explanation:

first we can say that

the number of jars is x

number of bread mixes is y

so we can set up our equation

x+y=8

6x+5y=45

so now we can set up substitution

x=8-y

now we can substitute 8-y in for the x's

so

6(8-y)+5y=45

distribute

48-6y+5y=45

simplify

48-y=45

-y=-3

y=3

now plug that in

x+3=8

x=5

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google