Blood Types:

45% O type

40% A type

4% AB type

11% B type

a) In a survey, 126 people had type O blood.

Predict how many people were surveyed.

Hint: use a proportion to solve for the unknown.

A series contains 18 numbers and has a sum of 4,185. The last number of the series is 275. What is the first number?

The width of a rectangular room is 60% of its length. The length of the room is 10 feet. What is the area of the room? The area of the room is square feet.

What is the product of 3x (x + 4) cOf

When using the 4 steps of the Golden Rule of Equations, how can you solve 5x - 2=13?

3/5y=-7/25 solve for y

From 1980 to 1990, the consumer price index (CPI) increased from 82.4 to 130.7. If a gallon of apple juice cost $0.

A car and a motorcycle leave at noon from the same location, heading in the same direction. The average speed of the car is 30 mph slower than twice the speed of the motorcycle. In two hours, the car is 20 miles ahead of the motorcycle.

The product of two factors is 72. One of The factors is 8. What is the other factor

Write 5 22/25 as a decimal.

Building a is 160 feet shorter than building b. the total height of the two buildings is 1530 feet. find the height of each building.