Answer:
His sister is 3 years old.
Step-by-step explanation:
Micah - M
Sister - S
M = 3 + 5S
18 = 3 + 5S
15 = 5S
3 = S
His sister is 3.
2/3. count the distance along the x and y axis from the y-intercept (0,0).
B - Less than.
If you replace the m in the first formula with 10, the number given for Mark, then the distance for 10 minutes would be 1,080 which is less than the amount Mark has.
Hope this helps!