Question

Andre and Elena are each saving money. Andre starts with $100 in his savings

account and adds $5 per week. Elena starts with $10 in her savings account and
adds $20 each week. After how many weeks will Andre and Elena have the same
amount of money in their savings accounts?
A. 5 weeks
B. 4 weeks
C. 6 weeks
D. 9 weeks

Answer 1

Andre’s equation is y = 5x + 100 and Elena’s is y = 20x + 10
Andre - 5x + 100 the x is how many weeks (6) so it’ll be 5(6) + 100 which is 30 + 100 = $130 in 6 weeks
Elena - 20x + 10 same thing x is how many weeks (6) as well so 20(6) + 10 which is 120 + 10 = $130 as well in 6 weeks so therefore, the answer is C.