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Karo-lina-s [1.5K]
3 years ago
15

Which function is a quadratic function? f(x) = 2x2 g(x) = 5x3 k(x) = –x b(x) = –9x4

Mathematics
2 answers:
zimovet [89]3 years ago
6 0

Answer:

A. f(x) = 2x2

Step-by-step explanation:

Sunny_sXe [5.5K]3 years ago
5 0
The answer is the first one
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A cell phone app charges $1.19 to download a song and 4.99 membership fee write an expression that gives the total cost in dolla
Andrew [12]

Answer: $1.19X+ 4.99

then :$15.7

Step-by-step explanation: first you write the expression  which is $1.19X + 4.99 because $1.19 is the cost of per song download and X stands for the numer of songs .

then after  you khow the expression  you substitute ( which meanse to put something instead of a variable like X) 9 because 9 is the total number of song

that how you get $15.7 if you substutute 9 with X.

hi . i hope the explanation is helpful to you .

5 0
3 years ago
Y=-10x+50 <br><br> x=9, <br><br><br> y=??
Fittoniya [83]

Answer:

-40

Step-by-step explanation:

Plug in 9 for x.

Use Order of operations

-10(9) = -90

-90 + 50 is the same thing as saying 50 - 90

we can simplify by splitting the -90 in to a -40 and a -50

the new equation could be 50 - 50 -40.

50 - 50 = 0

0-40 = -40

7 0
3 years ago
Mariah wanted to buy a new pair of shoes she compares prices at two stores. At the store Shoes! the shoes cost $49.99 with a 10%
Dima020 [189]

Answer:

B

Step-by-step explanation:

10% of 49.99

0.1 x 49.99 = 4.99

49.99 - 4.99 = 45.00

30% of 60.00

0.3 x 60 = 18

60 - 18 = 42.00

4 0
2 years ago
What is -5/8 / 9/10 ?<br><br> A. -25/36<br><br> B. -9/16<br><br> C. -45/80<br><br> D. -1/36
Ivenika [448]
Hi there, -5*10/9*8=-50/72, -50/72 simplified is -25/36. Therefore, the answer is A. -25/36
4 0
3 years ago
A town's population has been growing linearly. In 2003 the population was 35,000. The population has been growing by 2700 people
stiv31 [10]
2003: 35000
2004: 35000 + 2700 = 37700
2005: 37700 + 2700 = 40400 (and so on)
2006: 43100
2007: 45800
2008: 48500
2009: 51200
8 0
4 years ago
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