Question

Vivian bought 6 bottles of cooking oil. She gave the cashier $40 and expected $y change. (a) express the cost of 1 bottle of cooking oil in terms of y. (b) if y=10, find the cost of 1 bottle of cooking oil. (c) if y=1, find the cost of 1 bottle of cooking oil.

Answer 1

prize of 6 botl= 40-y
prize of 1 botl will 40-y/6
if y=10
then prize of 1 bottle is 5

Answer 2

Answer:

Part (a) The required equation is $y=40-6x$.

Part (b) If y=10, the cost of 1 bottle of cooking oil is $5.

Part (c) If y=1, the cost of 1 bottle of cooking oil is $6.5.

Step-by-step explanation:

Consider the provided information.

Let the cost of each bottle of cooking oil is $x.

Vivian bought 6 bottles of cooking oil.

Thus the cost of 6 bottles of cooking oil is 6x.

She gave the cashier $40 and expected $y change.

This can be written as:

$y+6x=40$

Part (a) express the cost of 1 bottle of cooking oil in terms of y.

$y+6x=40$

Subtract both sides by 6x.

$y=40-6x$

The required equation is $y=40-6x$.

Part (b) if y=10, find the cost of 1 bottle of cooking oil.

Substitute the respective values in the above equation.

$10=40-6x$

$-30=-6x$

$x=5$

If y=10, the cost of 1 bottle of cooking oil is $5.

Part (c) if y=1, find the cost of 1 bottle of cooking oil.

Substitute the respective values in the above equation.

$1=40-6x$

$-39=-6x$

$x=6.5$

If y=1, the cost of 1 bottle of cooking oil is $6.5.