Question

Justin receives $15 and puts it into his savings account. He adds $0.25 to the account each day for a number of days, d, after that. He writes the expression 15+0.25(d−1) to find the amount of money in his account after d days. Which statement about his 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.
d.It is the difference between the initial amount and the additional amount after d days.

Answer 1

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

Explanation:

It is the sum of the initial amount and the additional amount after d days. i have ttm

Answer 2

expression a

Explanation:

The given expression is 15+0.25(d−1).

let suppose,

15 = a

0.25(d−1) = b

we get a + b

It clearly indicates the given expression is sum of two entities, we can exclude option b and option d.

Now we are left with option a and c, for that we have to evaluate the term b

b = 0.25(d−1) that is the additional amount after d days

Therefore, expression a is correct.