Joan had 227 dollars to spend on 8 books. After buying them she had 11 dollars. How

much did each book cost?

A chemist needs to make 40 ml of a 25% acid solution. He has a 5% acid solution and a 30% acid solution on hand. If he uses the 5% and 30% solutions to creat the 25% solution, how many milliliters of each will he need?

Which sentence uses a verb that agrees with its compound subject? A. Our dogs and cats sleep upstairs. B. John and Jane wants spaghetti for dinner. C. Light bulbs and lamp shades is on aisle 12. D. The flowers and the shrubs needs sunshine

jerry uses 3.5 cups of rice to make 5 servings. He needs to make 32 servings. If rice is sold in 4 cup boxes, how many boxes will he need to buy?

Suppose the amount of algae in a pond doubles every 3 hours if the pond initially contains 50 pounds of algae, how much algae will be in the pond after 9 hours

The sum of three numbers is 20. The first number is the sum of the second and the third. The third number is three times the first. Find the numbers.

The sales totals at Macy's food store have increased exponentially over the months. Which of these best shows the sales in the first three months?

There are 613 students split into different 24 different classes about how many students are in each class

Maria's family hosts a barbeque every month in the summer. In May, they bought 3.2 pounds of hamburger and 3 packages of hot dogs. In June, they bought 1 1/2 times as much hamburger and 1/3 as many hot dogs. Hamburger costs $4.

A bag Contains rubber bands with lengths that are normally distributed with a mean of 6 cm of length, and a standard deviation of 1.5 cm. What is the probability that a randomly selected nail is between 4.5 and 7.5 cm long?

Is the function y = 8x - 4 linear or nonlinear?