Kelly had 4 apples in her kitchen on monday. on tuesday, only 1 was left.

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Step-by-step explanation:

2 = - 2 m + b

-1 = - m + b / ·(-1 )

2 = - 2 m + b

+

1 = m - b

3 = -m,   m= -3,    2 = 6 + b,   b = -4,

f ( x ) = - 3 x - 4

For the linear function h (x)9 we have 3 apples less every day:

h ( x) = - 3 x + 4

- 2 = - 2 m + b

+

10 = 2 m + b

8 = 2 b,             b = 4,  m = 3

j ( x ) = 3 x + 4

Four linear functions are:

1 ) f ( x ) = - 3 x - 4 

Linear function has a slope: m = -3, y-intercept: y = -4, zero: x = -4/3 and this function is constantly decreasing.

2 ) g (x ) = 3 x - 4

Function has a slope: m = 3, y-intercept : y =-4, zero: x = 4/3 and it is constantly increasing.

3 ) h ( x ) = - 3 x + 4

Function has a slope: m = -3, y-intercept: y = 4, zero: x = 4/3 and it is constantly decreasing.

4 ) j (x) = 3 x + 4

Function has a slope m = 3, y-intercept : y = 4, zero: x = 4 and it is constantly increasing.

Two linear functions f ( x ) and h ( x ) are parallel ( have an equal slope ), and  also are g ( x ) and j ( x ).   

Someone ate/took tree apples

Step-by-step explanation:

4-1=3

  about 8 cm

Step-by-step explanation:

The formula for the area of a regular polygon is ...

  A = 1/2Pa . . . . where P is the perimeter and "a" is the apothem, the distance from the center to a side

Filling in your numbers, we have ...

  20 cm^2 = (1/2)P(5 cm)

Dividing by the coefficient of P, we find ...

  2×(20 cm^2)/(5 cm) = P = 8 cm

The perimeter of the pentagon is about 8 cm.

Comment on the problem

This calculation makes use of the area formula, as apparently intended. A regular pentagon with an apothem of about 5 cm will have an area of about 90.8 cm^2. The given geometry is impossible, as the pentagon is nearly 10 cm across. It cannot have a perimeter of only 8 cm.