John is considering two different lawnmowers for his landscaping business. One has a tank that holds 7 gallons and is a riding lawnmower and the other,
a push model, only holds 4 gallons. The graph of each mower's gasoline
consumption is shown below.

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)

answer is because 4×10=40

and 98×4= is 392

40,392

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative