Sophie is eating a 50-gram chocolate bar which contains 30% of coca. How many grams of coca are in the chocolate bar?

A calendar shop has 5,624 calendars. Each rack can hold 38 calendars. How many racks does the store need to use?

Yvonne put $4,000 in a savings account. at the end of 3 years, the account had earned $960 in simple interest. a. how much does she have in her account at the end of the three years? b.

A: It will snow tomorrow. B: Students in one class perform better on tests than do students in another class. Which of the two statements is a candidate for hypothesis testing? Explain your reasoning.

Fiona's car has 8.5 gallons of gas in a tank her car can travel about 21 miles per gallon does she have enough gas to travel 158 miles

A bus driver from Chicago is offered two types of contracts. The first choice is to get $35,000 a year. The second choice is to receive $10,000 a year plus 25 cents for each mile that she drives.

The area of pennsylvania is 46,055 square miles. the area of florida is about 1.428 times larger than pennsylvania. what is the area of florida to the nearest square mile?

Find the quotient of ' (16t^2-4) / (8t+4) '

The Science Club has 35 members, 10 girls and 25 boys. What is the ratio of girls to boys in the Science Club? A. 2:1 B. 2:5 C. 5:2

The cost of petrol rises by 2 cents a liter. last week a man bought 20 liters at the old price. This week he bought 10 liters at the new price. Altogether, the petrol costs $9.20. What was the old price for 1 liter?

1. Which equation represents the linear graph? A) y = 2x - 4 B) y = 2x + 4 C) y = 4x - 2 D) y = 4x + 2