18. (ACED 2) A drver starts a journey with 25 gallons in the tank of his car. The car burns 5 gallons for every 100 miles Assume the amount of gasoline in the tank decreases linearly. Igal 20 miles
a White an equation to represent the number of gallons left in the tank at any given distance (in miles).
b. Identify the variables used.
c. How many miles will the car have traveled when it runs out of gas?

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

answer: 7

step-by-step explanation:

5 quiero

6 vamos

7 puedan

8 quiero

9pedemos

10 dorme

step-by-step explanation:

vertical=18cm horizontal=18cm hypotenuse=25.5

step-by-step explanation: