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zmey [24]
3 years ago
7

HELP ME PLS I NEED TO ACE THIS TEST!

Mathematics
1 answer:
vladimir2022 [97]3 years ago
5 0
The rate of change is -$45, and it represents the amount of money withdrawn each month.

We can find the rate of change by finding the change in y/change in x:

145-190/1-0 = -45/1 = -45

This would be the amount of money he withdraws from his account each month.
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The number of bacteria in a refrigerated food product is given by N ( T ) = 27 T 2 − 180 T + 100 N(T)=27T2-180T+100, 7 < T &l
NeX [460]

Answer:

N(T(t))=432t^2-374.4t-118.88

The number of Bactria after 5.8 hours is 12242.

Step-by-step explanation:

The number of bacteria in a refrigerated food product is given by

N(T)=27T^2-180T+100

where, T is the temperature of the food.

When the food is removed from the refrigerator, then the temperature is given by

T(t)=4t+1.6

We need to find the composite function N(T(t)).

N(T(t))=N(4t+1.6)

N(T(t))=27(4t+1.6)^2-180(4t+1.6)+100

N(T(t))=432t^2+345.6t+69.12-720t-288+100

N(T(t))=432t^2-374.4t-118.88

where N(T(t)) is the number of bacteria after t hours.

Substitute t=5.8 in the above function.

N(T(5.8))=432(5.8)^2-374.4(5.8)-118.88

N(T(5.8))=14532.48-2290.4

N(T(5.8))=12242.08

N(T(5.8))\approx 12242

Therefore, the number of Bactria after 5.8 hours is 12242.

7 0
3 years ago
Which equation represents the solution of the linear equation - 4x + 5 = 9?
Ludmilka [50]
The answer is C. C=-1

-4(-1)= 4 a negative times a negative is positive
4+5 is 9
5 0
2 years ago
Read 2 more answers
At last week's football game, 125 tickets were sold. This week 225 tickets were sold. What percent of the
victus00 [196]
You have to do 225 plus 125 divided by 2 times 100 and that is your percent
6 0
3 years ago
At Billy's school, 80 students come to school by bicycle or by car. Together, the vehicles they arrive to school in have 270 whe
Anna35 [415]

Answer:

x = number of bicycles = 35

y = number of cars = 55

Step-by-step explanation:

Let

x = number of bicycles

y = number of cars

x + y = 80 (1)

2x + 4y = 270 (2)

From (1)

x = 80 - y

Substitute x = 80 - y into (2)

2x + 4y = 270 (2)

2(80 - y) + 4y = 270

160 - 2y + 4y = 270

- 2y + 4y = 270 - 160

2y = 110

y = 110/2

y = 55

Substitute y = 55 into (1)

x + y = 80 (1)

x + 55 = 80

x = 80 - 55

x = 35

x = number of bicycles = 35

y = number of cars = 55

6 0
3 years ago
Find the point on the line 5x+7y+1=0 which is closest to the point (−4,3).
Keith_Richards [23]

5x + 7y + 1 = 0
4 0
3 years ago
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