Danielle and david each have a job. danielle earns $15 an hour. she also receives a $50 weekly bonus.

danielle wrote an equation to determine how much she earns in a given week.

y = 15x + 50

david earns $12 an hour and receives an $80 weekly bonus.

david made a graph to show how much he earns in a given week.

how many hours will it take danielle and david to earn the same amount of money?

enter your answer below.

? hours

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".

answer: 2530

hope this