Una wants to buy a video game system for $400. she has $50 and id saving $25 each week. solve the equation 25w+50= 400

W=14. This would her saving for 14 weeks at $25. 25*14=350 and + the $50 already saved.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.