Jennifer receives $100 and puts it into her savings account. she  adds  $0.25 to the account each day for a number of days,  d, after that. she writes the  expression  100 + 0.25(d  – 1) to find the  total  amount  of money in her savings account after  ddays. which  statement  about her  expression  is true? a. it is the sum of the initial amount and the additional amount after  d  days. b.it is the product of the initial amount and the additional amount after  d  days. c. it is the sum of the initial amount and the number of days,  d. it is the difference between the initial amount and the additional amount after  d  days

A. It is the sum of the initial amount and the additional amount after d days.

Step-by-step explanation:

We have been given an expression , which gives the total amount of money in Jennifer's savings account after d days.

Since Jennifer adds $0.25 each day after first day, so amount in Jennifer's account after d days would be 100 plus 0.25 times d minus 1 day.

Since Jennifer "adds" an amount each day, therefore, the expression is the sum of initial amount and the additional amount after d days.

55

step-by-step explanation:

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".