Anna is saving to buy a new cell phone. Her mother is helping Anna by contributing money each month. What is the ratio between the amount of money contributed by Anna and the amount contributed by her mother? What was the total amount saved in April?

Answer:Option D. 3:1, $120Step-by-step explanation:        The complete question in the attached figure     Part 1) What is the ratio between the amount of money contributed by Anna and the amount contributed by her mother?       Let    x -----> the amount of money contributed by Anna      y ----> the amount of money contributed by her mother     we know that    Looking at the table   The value of x is equal to   [tex]x=\$30+\$60+\$90+\$120=\$300[/tex]   The value of y is equal to   [tex]y=\$10+\$20+\$30+\$40=\$100[/tex]    Find the ratio  x/y   substitute the values  [tex]\frac{x}{y}=\frac{300}{100}=\frac{3}{1}[/tex]   Part 2)  What was the total amount saved in April?     we know that         To find out the  total amount saved in April, adds Mon's contribution in April plus Anna's contribution in April            so             [tex](\$30+\$90)=\$120[/tex]