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15.
(08.06 MC)
Abril and Alanis put some money into their money boxes every week. The amounts of money (y), in dollars, in their money boxes after certain amounts of time (x), in weeks, are shown by the equations below:

Abril
y = 50x + 10

Alanis
y = 30x + 70

After how many weeks will Abril and Alanis have the same amount of money in their money boxes, and what will that amount be? (1 point)


3 weeks, $160

3 weeks, $210

4 weeks, $160

4 weeks, $210

User TMNuclear
by
7.9k points

1 Answer

5 votes
A. 3, $160 because

Y = 50x + 10
Y = 30x + 70

Step 1 substitute your first number (3) for X .
Step 2 Solve . 50(3) = 150 + 10 = 160
30(3) = 90 + 70 = 160 Which Is Your Answer
User Marqin
by
6.8k points