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Leya [2.2K]
3 years ago
14

Xavier has $23.50 in his savings account. He deposits $35 every week. His mother also deposits $20 into the account every time

Xavier washes the car. His savings account balance can be shown with the following expression:
20c + 35w + 23.50

Part A: Identify a coefficient, a variable, and a constant in this expression. (3 points)

Part B: If Xavier saves for 12 weeks and washes the car 3 times, how much will he have in his account? Show your work to receive full credit. (4 points)

Part C: If Xavier’s mother deposited $25 after each car wash, would the coefficient, variable, or constant in the expression change? Why? (3 points)

(10 points)
Mathematics
1 answer:
maria [59]3 years ago
8 0

Answer:

Part A: a coefficient is either 20 or 35, both work. A variable is c or w, again either work.  The constant is 23.50.

Part B: He will have $503.50

Part C: The coefficient would change, because the amount per car changes, not the amount of cars.

Step-by-step explanation:

A coefficient goes in front of the variable (which is the letter, usually shown as x). The constant is a number with no variable attached.

We replace c with 20, and w with 12, giving us 20(3)+35(12)+23.50 for our equation. After multiplying, we come up with 60+420+23.50, which equals 503.50.


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Step-by-step explanation:

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Hello from MrBillDoesMath!

Answer:

2 - i

Discussion:

Evaluate F(x) = x^3 - 2 x^2 when x = i.

i^2 = -1 for i^3 = i ( i^2) = i (-1) = -i

So F(i) =  (i)^3 - 2 (i)^2                      

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which is the last answer shown


Thank you,

MrB

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