7th grade math

1. Evan withdrew a total of $160 from an ATM machine over a 4-day period. He withdrew the same amount of money each day.
a. Write an expression to represent the total amount that Evan's account changed each day.
Ans: 4d

b. What integer represents the total amount that Evan's account changed each day?
Ans: 160 = 4d
160/4 = d
$40 = amount changed each day

2. Broderick had $420in his checking account. He made 6 deposits of $35.50 each. He needs to write 4 checks for $310.75 each.
a. Write an integer to represent the total deposits Broderick made and another integer to represent the total amount Broderick needs from his checking account to cover the checks.
Ans: 6d; 4c

b. How much money does Broderick need to add to his account to cover his checks?
Ans: 6(35.50) = 213 + 420 = $633 (total)
4(310.75) = $1243 (checks)

$1243 - 633 = $610. Broderick needs to add $610 to cover his checks.

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  1. Looks good to me

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