Sonya has $40 in her lunch account and pays $2 each
day to eat lunch. Write
the equation that can be used to find the amount of money Sonya has on her
account after x days

Which of the following is the shape of a cross section of the figure shown below

Atourist boat is used for sightseeing in a nearby river. the boat travels 2.4 miles downstream and in the same amount of time, it travels 1.8 miles upstream. if the boat travels at an average speed of 21 miles per hour in the still water, find the current of the river.

Factor the gcf out of the polynomial 9x^6+6x^4+15x^3