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3 years ago

6 dollars for 2 cans of tuna

Mathematics

2 answers:

amid [387]3 years ago

7 0

3 dollars each lsjdhfj;jshdgkbvs d,fj

Gnom [1K]3 years ago

5 0

Each can would be $3

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which equation represents an exponential function that passes through the point (2, 80)? f(x) = 4(x)5 f(x) = 5(x)4 f(x) = 4(5)x

pav-90 [236]

we know that

if the exponential function passes through the given point, then the point must satisfy the equation of the exponential function

we proceed to verify each case if the point $(2,80)$ satisfied the exponential function

case A $f(x)=4(x^{5})$

For $x=2$ calculate the value of y in the equation and then compare with the y-coordinate of the point

$f(2)=4(2^{5})=128$

$128\neq 80$

therefore

the exponential function $f(x)=4(x^{5})$ not passes through the point $(2,80)$

case B $f(x)=5(x^{4})$

For $x=2$ calculate the value of y in the equation and then compare with the y-coordinate of the point

$f(2)=5(2^{4})=80$

$80=80$

therefore

the exponential function $f(x)=5(x^{4})$ passes through the point $(2,80)$

case C $f(x)=4(5^{x})$

For $x=2$ calculate the value of y in the equation and then compare with the y-coordinate of the point

$f(2)=4(5^{2})=100$

$100\neq 80$

therefore

the exponential function $f(x)=4(5^{x})$ not passes through the point $(2,80)$

case D $f(x)=5(4^{x})$

For $x=2$ calculate the value of y in the equation and then compare with the y-coordinate of the point

$f(2)=5(4^{2})=80$

$80=80$

therefore

the exponential function $f(x)=5(4^{x})$ passes through the point $(2,80)$

therefore

the answer is

$f(x)=5(x^{4})$

$f(x)=5(4^{x})$

7 0

3 years ago

The sum of the digits of a two-digit number is 13. If 27 is added to the number, the digits will be interchanged. Find the numbe

Lesechka [4]

Hello from MrBillDoesMath!

Answer:

Discussion:

Suppose the 2-digit number is "ab". That is, 10a + b.

Sum of digits = 13 => a + b = 13 (*)

Digits reversed if 27 added to number => (10a + b) + 27 = 10b + a (**)

(**) =

(10a + b) + 27 = 10b + a => subtract 10b, then a, from both sides

9a -9b = -27 => divide both sides by 9

a - b = -3

From (*), a+ b = 13 so

(a-b) + ( a+b) = -3 + 13 =>

2a = 10 =>

a = 5

As a +b = 13, 5 + b = 13 => b = 8

Hence the number "ab" is 58

Thank you,

MrB

8 0

3 years ago

I neeeed help please?!!!):

topjm [15]

Answer:

quadrant III

Step-by-step explanation:

try to draw the axis and u will see the answer.

8 0

3 years ago

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An amusement park had 56,437 visitors the first year and 48, 319 visitors the second year it was open . What was the total numbe

Sedbober [7]

Answer:

the total number is 104756

Step-by-step explanation:

You need to add 56437 with 48319 which equals 104756

4 0

3 years ago

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(2x)^-1 how do u put this into a positive exponent and a fraction? 20 points

Naddika [18.5K]

For this case we have that by definition of power properties it is fulfilled that:

$a ^ {-1} = \frac {1} {a ^ 1} = \frac {1} {a}$

Then, if we have the following expression:

$(2x)^{ -1}$

Applying the property, we can rewrite the expression as:

$\frac {1} {(2x) ^ 1} = \frac {1} {2x}$

Answer:

$\frac {1} {2x}$

6 0

4 years ago