Bill spent $60 of fertilizer and weed killer for his lawn. Each pound of fertilizer cost 75 cents, and each ounce of weed killer cost $2.50. Which of the following equations represents the relationship
between the number of pounds of fertilizer Bill bought, x, and the number of ounces of weed killer
he bought, y?

a) y = -3/10x + 24
b) y = -3/4x + 60
c) y = -5/2x + 60
d) y = -10/3x + 80

a) y = -3/10x + 24.

Step-by-step explanation:

2.5y + 0.75x = 60

2.5y = -0.75x + 60

Divide through by 2.5:

y = -3/10x + 24.

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column