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3 years ago

Which equation represents an exponential function that passes through the point (2, 80)?

Mathematics

2 answers:

Sloan [31]3 years ago

5 1

The equation is y=mx+c where m is the gradient and c is the y-intercept

allsm [11]3 years ago

3 1

Answer:

Step-by-step explanation:

Given that the exponential function passes through the point (2,80)

Since only one point is given there may be more than one exponential function satisfying this.

One of them we select here is with base 4 and coefficient 5.

i.e.

$y=5(4^x)$

We can check whether (2,80) lies on it.

Substitute x=2 and y =80

Left side =80

Right side = $5(4^2)=80$

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How are the solutions to the following two equations related m+5=72 <br> m+72=5

EastWind [94]

To see how they are related, let us solve the two equations.

FIRST EQUATION

$m + 5 = 72$

$\rightarrow \: m = 72 - 5$

$\rightarrow \: m = 67$

SECOND EQUATION

$m + 72 = 5$

$\rightarrow \: m = 5 - 72$

$\rightarrow \: m = - 67$

Hence the solutions to the two equations are ADDITIVE INVERSE of each other.

6 0

4 years ago

What is the equation of a line passing through 1,2 and -2,5

AleksAgata [21]

Answer:

y=-1x+3

Step-by-step explanation:

2-5/1+2

-3/3

-1

y=-1x+b

2=-1+b

b=3

y=-1x+3

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3 years ago

Equivalent to (6 + y) × 5?

Sergeeva-Olga [200]

The answer is:
It’s equivalent to 30+5y

6 0

3 years ago

Read 2 more answers

A group of 15 explorers to the south pole had just enough food to last them for 40 days how long would the food last if all of a

Trava [24]

Answer:

3 days

Step-by-step explanation:

15-3=12

40/12= 3.3

round to 3

5 0

3 years ago

Esme buys jacketsfor 500 each and prices them for 700 each.If the selling price is reduced by 20%. how much profitdoes Esme make

Blababa [14]

Answer:

($) 60 is the profit per item when the selling price is reduced by 20%

Step-by-step explanation: 20% of 700 is 140.

The original profit is 700 - 500 = 200. The selling price is 140 less, Subtract 140 from 200. That leaves a profit of 60. (Not necessarily dollars, as the currency was not given in the question.)

7 0

3 years ago