You and your friend are playing a number-guessing game. You ask your friend to think of a positive number, square the number, multiply the results by 2 and then add 3. Your friend's final answer is 53. What was the original number chosen? Justify your answer.

Mr. walker gave his class the function f(x) = (x + 3)(x + 5). four students made a claim about the function. each student’s claim is below. jeremiah: the y-intercept is at (15, 0). lindsay: the x-intercepts are at (–3, 0) and (5, 0). stephen: the vertex is at (–4, –1). alexis: the midpoint between the x-intercepts is at (4, 0). which student’s claim about the function is correct?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8