Help in taking a final right now. The variables A, B, and C represent polynomials where A = x + 1, B = x2 + 2x − 1, and C = 2x. What is AB + C in simplest form?

A. x3 + 3x − 1
B. x3 + 4x − 1
C. x3 + 3x2 + 3x − 1
D. x3 + 2x2 − x + 1

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Ascatter plot with a trend line is shown below. which equation best represents the given data? y = x + 2 y = x + 5 y = 2x + 5