Answer:
1. and 2. Direct variation
3. Inverse variation
4. Direct variation
5. Direct variation
Step-by-step explanation:
In direct variation if one variable increase the other one also increase
In inverse variation if one variable increase the other one decrease
1. and 2. Direct variation. As the number of washes increase the cost increase.
3.Inverse variation. If x increase, y has to decrease so that their multiplication remains the same
4. Direct variation. If y increase, x has to increase so that their division remains the same
5. Direct variation. As you spend more time travelling the distance you travel increase