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3 years ago

11

Mary spent a total of $352.00 for a party. She spent $200.90 on food, plus an additional $30.22 for each hour of the party. How

long was the party?

2 answers:

steposvetlana [31]3 years ago

7 0

I dont know I actually read the problem wrong the first time and came up with a total different answer but 5 hours seems about right

Annette [7]3 years ago

5 0

Answer:5 hours

Step-by-step explanation:

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Consider the function f(x) = x² – 3x – 4 and complete parts (a) through (C). (a) Find f(a+h); f(a+h)-f(a) (b) Find (c) Find the

Artist 52 [7]

Answer:

(a)

$f(a+h)=a^{2} +2ah+h^{2} -3a-3h-4$

(b)

$f(a+h)-f(a)=2ah+h^{2} -3h$

(c)

$\frac{df(a+h)}{dx} \left \{ { \atop {a=7}} \right. =2h+11$

Step-by-step explanation:

(a)

Simply evaluate (a+h) in the function:

$f(a+h)=(a+h)^{2} -3(a+h)-4=a^{2} +2ah+h^{2} -3a-3h-4$

(b)

Evaluate (a) in the function:

$f(a)=a^{2} -3a-4$

Using the previous answers lets calculate f(a+h)-f(a)

$f(a+h)-f(a)=a^{2} +2ah+h^{2} -3a-3h-4-(a^{2} -3a-4)=2ah+h^{2} -3h$

(c) To find the rate of change of f(a+1) when a=7 we need to calculate its derivate at that point:

$\frac{df(a+h)}{dx} \left \{ { \atop {a=7}} \right. =2a+2h-3=2(7)+2h-3=2h+14-3=2h+11$

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3 years ago

If no number can be used more than once, how many different 2-digit numbers can be formed from the digits 4, 6, and 8?

ikadub [295]

Answer:

Six.

46

48

64

68

84

86

Step-by-step explanation:

hoped this helped!

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3 years ago

Answer the question and prove your answer on a separate piece of paper. 1 point

EastWind [94]

Answer:

as below

Step-by-step explanation:

it's negative 4 or -4 is the rate of change or aka the slope

show the teacher the graph, which is free and also online. ( Demos )

:) you can make that graph also is my point

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3 years ago

Sasha can run at an average speed of 9 3/4 min/mi. She runs at this speed for 68 1/4 min.

miv72 [106K]

9 3/4 = 39/4 mi/m

68 1/4 = 273/4 min

39/4 mutiply by 273/4 = 10647 / 16 mi = 665.4 mi

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3 years ago

What does 3x2 + 9x − 30

Harlamova29_29 [7]

Answer:38

Step-by-step explanation:

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