What is the surface area of a sphere with a circumference of 30 ft? round the answer to the nearest tenth. 286.5 ft^2 143.2 ft^2 71.6 ft^2 22.8 ft^2

What does x = in this equation x+3+2x=x+5

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

Im literally having a mental breakdown