Polynomial Identities, Pascal's Triangle, Regression Equation

The table shown is comparing a person's foot length to their height in cm. Calculate a line of best fit.

• f(x) = 5.57 + 25.05x

• f(x) = 25.05 + 5.57x

• f(x) = 25.05 - 5.57x

• f(x) = - 25.05 + 5.57x

What is the line of best fit? (Ignore the x = 30, y = ? point.)

• f(x) = 1.82 + 5x

• cannot be determined

• f(x) = 5.02 + 1.82x

• f(x) = 4.2 + 1.1x

What is the third term for the expansion (2x-5)⁵?

• 2000x³

• 500x³

• 5000x²

• 800x³

Find the element in Pascal's Triangle. 12th row and 5 element.

• 1

• 495

• 330

• 792

Find the 4th term in the expansion of (4x-3)⁵.

• 5760

• -4320x²

• 5760x³

• -4320

Find the 14th term of (2x-y)¹⁸

• -274,176x⁵y¹³

• 274,176x⁵y¹³

• 64,064x⁵y¹⁴

• -64,064x⁵y¹⁴

How many terms are the in the expansion of (a+b)⁵

• 5

• 6

• 25

• 50

• 3

Expand the binomial. (4x+3y)⁴

Expand (a⁴-4b)³