In science experiments, the temperature of a substance is changed from 42 ºF to - 54ºF at an average rate of - 12 degrees per hour. Over how many hours does the change take place?

A large candy bar was 127 calories. The smaller candy bar has 25 percent less calories. How many calories does the smaller candy bar have?

What value of X satisfies the equation 4x+0.2=3

Use the distributive property to multiply - 3 (-2 3/10)

Elise is selling coupon cards as a fundraising project for her soccer team. For each coupon card she sells, she earns $4 for the team. The graph below displays the relationship between cards sold, x, and money earned, y.

The number 29.6 is what percent of 74 ?

Susan bought 1 kilogram bag of grapes

Rob bought one jar of sun-dried tomatoes for $4. How many jars can Mofor buy if he has $8?

What is 20.35 divided by 3 in the standard algorithm

A stadium must have 10 attendants at the stadium parking lot and two each at the satellite lots. each attendant makes $10/hour.

Dixon and his little sister Ariadne stand next to each other on the playground on a sunny afternoon. Their mother measured their shadows. Dixon's shadow is 18 feet long and is 18 feet long and ariadne's shadow is 15 feet long.