Can someone me with this last 2 questions

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

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)