The new computer costs $100 more than twice the costs of an older model. if the sum of the costs of the computers is 2800, how much does each computer cost?

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)

Measures of the angle of r, 31 s (x+4) t (3x+9)

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?