Diego's family car holds 18 gallons of fuel. each day the car uses .8 gallons of fuel. a warning light comes on if the remaining fuel is 1.2 or less.

a. starting from full tank, can diego's car go 15 days without the warning light turning on?

b. starting from a full tank, can diego's car drive 20 days without the light coming on?

c. deigo says that the expression 18-.8t him understand, what does t stand for?

d. write and solve an equation to determine the number of days his car can go before the warning light turns on.

e. write and solve an inequality that represents this situation. explain clearly what the solution to the inequality means in the context of this situation.

a) yes

b) yes

c)  days

d) equation: 18 - 0.8x =1.2

solution: 21

e)inequality: equation: 18 - 0.8x 1.2

solution: x < 21. This means that if he drives for less than 21 days the warning sign won't turn on.

Step-by-step explanation:

a) 18 - 15*0.8 = 6 so yes

b) 18 - 20*0.8 = 18 - 16 = 2

d) 18 - 0.8x =1.2

0.8x = 16.8

x = 16.8/0.8 = 21

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

the answer is 62.8 cubic units