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Alborosie
4 years ago
14

Precalculus question worth 20 points

Mathematics
2 answers:
sveta [45]4 years ago
5 0

Answer:

See the graph.

Step-by-step explanation:

The function that represents the problem is

f(x) = {15 if 1≤x≤5 and 15+1.50(x-5) if x>5

and the graph is in the image, the green line is in y=15. You need to be clear that x takes integer values, but the graph shows a continuous function.

s2008m [1.1K]4 years ago
4 0
Notice the picture, after the price of quantity (x) of 5, the price begins to slant up, but before 5 is just a straight line, a steady price of 15
\bf f(x)=
\begin{cases}
15,&0\ \textless \ x\le 5\\\\
1.5x+7.5,&x\ \textgreater \ 5
\end{cases}

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A sales manager gathered information on the number of sales calls made and the number of copiers sold for a random sample of 20
lubasha [3.4K]

Answer:

. The sales manager gathered information on the numbers of sales calls made and the number of copiers sold for a random sample of sales representative. Is there a positive correlation between calls made and copiers? Test at the 0.05 level of significance. Determine the 90% prediction interval for 60 number of calls made. * Calls, X Sold. Y 20 40 20 50 40 60 50 90 40 80 20 40 40 60 30 60

5 0
3 years ago
Plant B is 6 2/3 inches tall. and C is 4 4/15 inches tall. Complete the sentences and show your reasoning
artcher [175]

Answer:

Plant C is <u>0.64</u> times as tall as Plant B

Plant C is <u>2.4 inches</u> shorter than Plant B

Step-by-step explanation:

Plant B is 6 2/3 inches tall. Plant B is 20/3 inches tall.

Plant C 4 4/15 inches tall. Plant C is 64/15 inches tall.

a.) Plant C is shorter than Plant B = \frac{64}{15} \times \frac{1}{\frac{20}{3} }  = \frac{64}{15} \times\frac{3}{20}  = \frac{16}{25} = 0.64 times.

b.) Plant C is shorter than Plant B by = \frac{20}{3}  - \frac{64}{15}  = \frac{100}{15}  - \frac{64}{15}  = \frac{100 -64}{15}  = \frac{36}{15} = 2\frac{2}{5} = 2.4 inches

3 0
3 years ago
What is the slope of the line given by the equation y=4x?
umka2103 [35]

Answer:

the slope is 1 over 4, or up 1 right 4.

Step-by-step explanation:

4 0
3 years ago
Simplify 4a +3b - a -5b
Umnica [9.8K]
4a + 3b - a - 5b

First, gather the like terms.
(4a - a)+(3b-5b)
Second, subtract 4a - a to get 3a.
(3a)+(3b-5b)
Third, subtract 3b - 5b to get 2b.
3a - 2b

Answer: 3a - 2b

6 0
3 years ago
Combine like terms to find the equivalent expression to6(58u+1)−6(−74u−5).
gtnhenbr [62]

Answer:

-36 • (22u + 1)

Step-by-step explanation:

Pulling out like terms :

2.1     Pull out like factors :

  -74u - 5  =   -1 • (74u + 5)

Equation at the end of step  2  :

 (6 • (58u + 1)) -  -6 • (74u + 5)

Step  3  :

Equation at the end of step  3  :

 6 • (58u + 1) -  -6 • (74u + 5)

Step  4  :

Pulling out like terms :

4.1      Pull out     6

Note that  -6 =(-1)• 6

After pulling out, we are left with :

     6 • ( (-1)  *  (58u+1) +( (-1)  *  (74u+5) ))

Step  5  :

Pulling out like terms :

5.1     Pull out like factors :

  -132u - 6  =   -6 • (22u + 1)

Final result :

 -36 • (22u + 1)

6 0
4 years ago
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