Suppose you have a 5x5 checkerboard with 25 squares. You put one penny on the first square, then 2 pennies on the next square then 2 pennies on the third square and so on until there are pennies on all the squares. How many pennies are on the 25th square?

I think the answer is 2.

Step-by-step explanation:

I couldn't determine the pattern since you placed 2 pennies on the other squares other than the first one.

(0.2)+(-8)=0.3+-3+0.3m is the equation i guess? ?

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)