In a lab a substance was cooled by 42C over a 7 hours at a constant rate. What was the change in temperature each hour?

Onece a person had gone for a horse racing area. Instead of counting the number of humans an horses, he counted 74 heads and 196 legs. How many humans and horses were there? A. 37 humans and 98 horses B. 24 horses and 50 humans C.

Substitute t=3 and t=5 to determine if the two expressions are equivalent

Write the number 0.489 in two forms

At a certain gas station, 40% of the customers use regular unleaded gas, 35% use extra unleaded gas and 25% use premium unleaded gas. Of those customers using regular gas, only 30% fill their tanks.

3) The two largest oil spills together released 298 million gallons of oil into the oceans. The smaller of the two released 58 million gallons less than the larger of the two. How many million gallons did the larger one release?

Sue's family went on a vacation her mom drove the car at 60 mph they camped at a campground after traveling for 5 hours how far was the campground from their home?

Which shows a difference of squares? 1072-4x2 1672 - x2 8x2-40x+25 64x2-48x + 9

A number which can be expressed in the form of a/b is

Rudy delivers pizza and earns $8 an hour. He averages about $14 per hour in tips. About how much does he earn in a 40 hour week? $

Simplify each sum (t^4 + 5t - 3) + (-9t^4 - 8t - 4)