3. there are 18 gallons of gas in a car at the
beginning of a trip. each hour into the trip,
2.5 gallons are used. write an equation to
represent the gas left in the car after each
hour into the trip. identify your variables.
a) what is the rate of change?
b) what is the initial value ?
c) what is the independent variable?
d) what is the dependent variable?

i'm not entirely sure

step-by-step explanation:

if you ask home depot or lowe's they might be able to you out

step-by-step explanation:

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)