Sierra is saving money to buy a bike the bike costs $245. she has $125 saved and each week she adds $15 to her savings. how many weeks it take her to have enough money to buy the bike
you should start with an equation. [tex]245 = 125 + 15x[/tex] The 'x' represents the week.
so now, we have to subtract 125 from the total amount which is 245. [tex]245 - 125 = 120[/tex] now we have [tex]120 = 15x[/tex] to find 'x', we must divide 15 on each side [tex] \frac{120}{15} = \frac{15x}{15} [/tex] we are now left with [tex]8 = x[/tex] that means Sierra will have 8 weeks until she has enough money to buy the bike
