Solving quadratic equations - factoring.

Factor to solve each problem 1-3

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Which one is true about the hexagons ?

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?