Eve went to a pizza place with 2 friends. they ordered a large mushroom pizza for $11.30 and a garden salad for $6.10. they also got 2 sodas for $1.15 each. the tax came to $1.05.
how much change should they have received from $25.00?

$4.25

Step-by-step explanation:

When you add up all of the items they bought, you get $20.75. You subtract the total of $20.75 from $25.00 and get $4.25 back in change.

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

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".