Mary and Carl drove to the store to shop. Their trip to the store and back home is graphed here. What was their average speed on the way home from the store? A) 30 km/h B) 40 km/h C) 60 km/h D) Cannot tell from this data.

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Jamie went to home depot. she bought 25 bags of soil that cost $9 per bag. she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each. she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jamie pay at the end?

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)