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Sliva [168]
3 years ago
6

PLease help me!! Each question is worth 25 points please dont get it wrong please!!

Mathematics
1 answer:
MAXImum [283]3 years ago
7 0

Answer:

1. A (85)(0.08)=6.90 then (85)(0.18)=15.30 then 85 + 6.90 + 15.30 =107.10

2. 82.68

Solving;

She was charged $65 before tax. She had to pay a 6% tax (65)(0.06)=3.90 then 65+3.90=68.90

After this she added 20% of the amount after tax rather 20% of 68.90

68.90(0.20)=13.78 then 68.90+13.78=82.68

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The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May it cost her $420 to drive 500 mi
djyliett [7]

Answer:

C(d) = \frac{1}{5}d + 320

Step-by-step explanation:

Given

d \to miles

C \to cost

So:

(d_1,C_1) = (500,420) --- May

(d_2,C_2) = (620,444) --- June

Required

Express as a function

Start by calculating the slope (m)

m = \frac{\triangle C}{\triangle d}

m = \frac{444-420}{620-500}

m = \frac{24}{120}

Simplify

m = \frac{1}{5}

The equation is:

C(d) = m(d - d_1) +C_1

C(d) = \frac{1}{5}(d - 500) +420

C(d) = \frac{1}{5}d - 100 +420

Take LCM

C(d) = \frac{1}{5}d + 320

6 0
3 years ago
The scatter plot below shows the average rent (in dollars per month) for a 1 bedroom apartment in new york city each year betwee
Ne4ueva [31]

Answer:

B) y=40x+800

Average Rent in 2020: $1600

Step-by-step explanation:

4 0
4 years ago
Solve the system of equations using substitution y=x-1 and y=-2x+5
pav-90 [236]
Since the two equations equal y, set them equal to each other.

x-1=-2x+5

From there, solve for x.

First get x on one side, by using the addition property of equality.

x-1=-2x+5
3x-1=5

Isolate x by adding 1.
3x=6

Lastly get x all by itself by dividing each side by 3.
x=2

You can now substitute your x-value, 2, into one of the equations (or both, if you wish; either one will result in the same answer.)

y=x-1
y=2-1
y=1

OR

y=-2x+5
y=-2(2)+5
y=-4+5
y=1

Final answer:
x=2 and y=1

Any questions or anything you would like me to clarify, feel free to ask :)
7 0
3 years ago
PLEASE HELP!!!
boyakko [2]
If ir means not, then irrational means not rational. Pi is and irrational number.
5 0
3 years ago
Read 2 more answers
Mr. Patel bought lunch at a restaurant for $7.35. If he paid with a $10.00 bill, how much change did he get back?
Allisa [31]
2.65 dollars and cents
8 0
3 years ago
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