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Anna11 [10]
3 years ago
13

Farrah needs an electrician and must decide between 2 companies. For a service visit, Company A charges $50 to send an electrici

an plus $40/h. Company B charges $60 to send an electrician plus $36/h. The graph that models this situation is shown here.
According to the graph, how long must each electrician work in order for the two to charge equal amounts?
Mathematics
2 answers:
ss7ja [257]3 years ago
4 0
Company B. Its kinda commen sense.
weqwewe [10]3 years ago
3 0
Each line represents a technician. So if you want to know at what time the charges are equal, you need to see where the lines intersect. In this case, its 2.5 hours. 
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If Free Yer Assets Bank (FYAB) will give you 0.25% compounded quarterly and I.M.A.Q.T.π bank will give you 0.23% interest compou
ivann1987 [24]

Answer:

FYAB gives a better deal.

Step-by-step explanation:

Compound interest:

A = P(1 + \dfrac{r}{n})^{nt}

Continuously compounded interest:

A = Pe^{rt}

For the quarterly compounded interest, r = 0.25%, and n = 4.

2P = P(1 + \dfrac{0.0025}{4})^{4t}

1.000625^{4t} = 2

\log (1.000625^{4t}) = \log 2

4t(\log 1.000625) = \log 2

t = \dfrac{\log 2}{4\log 1.000625}

t = 277

For the continuously compounded interest, r =0.23%

A = Pe^{rt}

2P = Pe^{0.0023t}

2 = e^{0.0023t}

\ln 2 = \ln e^{0.0023t}

\ln 2 = 0.0023t

t = \dfrac {\ln 2}{0.0023}

t = 301

The quarterly compounded doubles in 277 years.

The continuously compounded doubles in 301 years.

Answer: FYAB gives a better deal.

7 0
3 years ago
Which of the following uses the distributive property correctly? 9(m – 2) = 9(m) – 9(2) 9(m – 2) = 9(m) – 2 9(m – 2) = 9 – 9(2)
alexira [117]
Its 9m-9(2) make sure to think of the minus sign as a negative because it will equal 9m-18 not 9m+18
3 0
3 years ago
Saj has made 7 litres of curry sauce.
Makovka662 [10]

Answer:

18 jars can be filled completely.

Step-by-step explanation:

7L=7000ml

1 jar contain 375 ml

375ml can be filled in 1 jar

375ml=1 jar

1 ml = 1/375 jar

7000 ml = 7000× 1/375 jar

7000ml= 18.67 jar

hence 18 jars can be filled completely.

3 0
3 years ago
Which number line correctly shows 4.5 - 2.5?
il63 [147K]

Answer:

number one

Step-by-step explanation:

if if 4.5 - 2.5 the answer is 2 that means the answer is number one

5 0
3 years ago
Read 2 more answers
I want to be a teacher some day and i know this question----------What is -15 -(-8)=? remember a negitive plus a negitive equals
irina [24]
Answer is -7 because -15+8=-7
8 0
3 years ago
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