Can someone please help me​

The sum of two numbers is 12 and their difference is 18 what are the two numbers

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)

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?