Simplify:

5x3 – 2x2 + x + 4x3

8x3

9x6– 2x2+ x

9x3– 2x2+ x

5x3– 2x2+ x + 4x3 (the expression cannot be simplified)

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)

2x minus y equals 6, x plus y equals negative 3

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?