The 2nd number line model represents 1 + ( -3 ).
Answer:
A
Step-by-step explanation:
If two lines are perpendicular, the slopes are the negative reciprocals of each other. If one slope is 5, then the other is -1/5.
y=400+50x
y=300+25x
Step-by-step explanation:
x is the number of minutes and y is the total cost
Answer:
35 adult shirts were sold
Step-by-step explanation:
10y+15a=2375
y+a=220
y=220-a
10(220-a)+15a=2375
2200-10a+15a=2375
2200+5a=2375
5a=175
a=35
35 adult shirts were sold.