Word problem

alexis has a steady babysitting job over the summer. she starts out with $50 by the end of the first week and earns $30 each week. she thinks it will take her 7 weeks to have enough money to buy a $200 iphone. is she correct? justify your answer using complete sentences and proper grammar.

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x