If a 1 = 3 and a ( n + 1 ) = 2 a n   , which equation represents the explicit formula for the sequence? a. a n = 2 · 3 n b. a n = 2 · 3 n − 1 c. a n = 3 · 2 n d. a n = 3 · 2 n − 1

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

Identify the graph of y = ln x + 1.