The number 1953 R8T9 467 is a valid card number when verified by the Luhn Algorithm. R and T are each single digits of the number such that R is less than T. Determine all possible values of R and T.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

12.5 feet

step-by-step explanation:

i got 10.28 but that rounds up to 10.3

y -5 = (-1/4)(x + 8)

step-by-step explanation: