On a coordinate plane, a line goes through points (2, 4) and (3, 1). Which are solutions of the linear equation?
Select all that apply.

3x + y = 10

(1, 6)
(2, 4)
(3, 1)
(4, –1)
(5, –5)

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

In the rectangle below ac=30 units what is de