Rachel and her friends are making necklaces out of beads and straws. they plan to use 12 beads and 5 straws for each necklace. they have a jar of beads that contains a total of 2,700 beads. how many necklaces can they make?

Which of the following contains a variable?

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]