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Oksana_A [137]
3 years ago
12

Marlene has a credit card that uses the adjusted balance method. For the first 10 days of one of her 30-day billing cycles, her

balance was $570. She then made a purchase for $120, so her balance jumped to $690, and it remained that amount for the next 10 days. Marlene then made a payment of $250, so her balance for the last 10 days of the billing cycle was $440. If her credit card's APR is 15%, which of these expressions could be used to calculate the amount Marlene was charged in interest for the billing cycle?
Mathematics
2 answers:
saw5 [17]3 years ago
8 0
For APEX it’s C

(0.15/365 • 30) ($320)

Good luck my dudes!!
Elan Coil [88]3 years ago
3 0

Solution:

Starting balance of Marlene for first 10 days of her 30 days billing cycle

                                                         = $ 570

Purchase made = $ 120

Total Balance after purchase made = $ 570 + $ 120 = $ 690

Payment made = $ 250

Balance for last 10 days = $ 690 - $ 250 = $ 440

Credit Card APR = 15% Annually

Credit Card APR = \frac{15}{12}=\frac{5}{4} = 1.25% monthly

Amount charged as an interest for billing cycle = 440 \times \frac{1.25}{100}

    = \frac{550}{100}

     =  $ 5.50 ( Amount charged)

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Hamburgers cost $3 and hotdogs cost $2. The total cost of buying b hamburgers and d hotdogs can be expressed by C=3b+2d. How can
Temka [501]
C = 3b+2d is the same as 3b+2d = C

Let's isolate d. To do this, we first need to subtract 3b from both sides

3b+2d = C
3b+2d-3b = C-3b
2d = C-3b

Then divide both sides by 2

2d = C-3b
2d/2 = (C-3b)/2
d = (C-3b)/2

Take note of the parenthesis as they are very important. We want to divide ALL of C-3b over 2. We don't want to just divide -3b over 2.

The answer choices you have aren't 100% clear but I have a feeling your teacher meant to say d = (C-3b)/2 instead of d = C-3b/2 for choice A

If that assumption is correct, then the answer is choice A.
7 0
3 years ago
A track-and-field athlete releases a javelin. The height of the javelin as a function of time is shown on the graph below. Use t
Georgia [21]
Part 1:
 
 For this case we must see in the graph the axis of symmetry of the given parabola.
 We have then that the axis of symmetry is the vertical line t = 2.
 Answer:
 
The height of the javelin above the ground is symmetric about the line t = 2 seconds:

 
Part 2:

 
For this case, we must see the time t for which the javelin reaches a height of 20 feet for the first time.
 We then have that when evaluating t = 1, the function is h (1) = 20. To do this, just look at the graph.
 Then, we must observe the moment when it returns to be 20 feet above the ground.
 For this, observing the graph we see that:
 h (3) = 20 feet
 Therefore, a height of 20 feet is again reached in 3 seconds.
 Answer:
 
The javelin is 20 feet above the ground for the first time at t = 1 second and again at t = 3 seconds
5 0
3 years ago
i) Baraka bought ksh.20,000 worth of shares of a company each month. During the first three months, he bought the shares at a pr
Sladkaya [172]

The average price paid by him for the shares after 3 months is ksh. 163.33

<h3>Average</h3>

  • Total value of shares bought = ksh.20,000

  • Amount of shares bought in the first three months = ksh.120, ksh.160 and ksh.210

Average price paid for the shares after 3 months

= (120 + 160 + 210) / 3

= 490 / 3

= 163.333333333333

Approximately,

ksh. 163.33

Learn more about average:

brainly.com/question/20118982

#SPJ1

4 0
2 years ago
The dimensions of a rectangular pool table are: (x + 4)(x + 10), What is the area of the table?
sergij07 [2.7K]

Answer:

D. x^2 +14x + 40

Step-by-step explanation:

(x+4)(x+10)

x^2+10x+4x+40

x^2+14x+40

6 0
3 years ago
Read 2 more answers
Slope:<br> Y-Intercept:<br> Equation:
sergejj [24]
Slope: 3/2.
Y intercept: -3
Equation: Y=3/2x-3
8 0
3 years ago
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