If the mean of normally distributed test scores is 78 and the standard deviation is 7 find the percentage of scores in the following ranges:

a) 71-92

b) 64-100

c) 70-80

At a concert 20% of the people are wearing black dress suits, 1/4 are wearing navy, 0.35 are wearing brown, and the rest are wearing a variety of colors. Write the percent, fraction, and decimal for each color clothing

What is 778,400,000 in scientific notation?

In triangle ABC, m angle A = 45 m angle b = 65 and a = 15.05. Use the law of sines to find b. Round your answer to the nearest tenth.

How many solutions does the following equation have 7 (y+3) = 5y+87 (y+3) = 5y+8?

Name two ways you might see decimals used outside of school.

A ball is thrown directly upward from an initial height of 200 feet with an initial velocity of 96 feet per second. How long does it take for the ball to reach it's maximum height?

Carole has $53.95 and washes cars for $8 each. Carole wants to attend a musical that costs $145.75. a. Write and solve an inequality to determine the minimum number of cars Carole must wash to be able to buy the ticket to the musical. b.

5. Given beverage sales of $5,400 and cost of beverages sold of $900.00, the beverage cost percent is:

Paul Woonan, a self employed accountant, is married and enrolls in a non-group health insurance plan. The plan costs $7,710 per year for the family coverage. What will he pay each month in premiums?

At a movie rental machine the movies rent for $3.00 expect on Tuesday when they rent for $0.49. Approximately what percent of the regular cost