If f (x) varies directly with x2, and f (x) = 40 when x = 2, find the value of f (5).

The area of a bulletin board is 55 ft2. The length is nine feet less than four times the width. Find the length and the width, in feet, of the bulletin board.

At the start of the 20th century, there were about 100,000 tigers in the wild. In 2014 there were about 3,200. What percent did the population decrease

Use the quadratic equation x2+8x-4=0 to answer the questions. A: What is the discriminant of the quadratic equation? B: Based on the discriminant what can you infer about the number and type of solution?

6 + k/5 = - 4 solve for k showing work

Fourteen less then five times a number is three times the numder

The sum of two consecutive numbers is - 49 what are they

Yummy Cookies just opened a brand new cookie bakery, ans sales are increasing every month! In January, the baker made 14 carrot cake cookies. In February, the baker doubled the January order, took 5 cookies home to his family, and sold the rest.

What is the value of the expression 2 1/2 x + 3 2/3 y (if x = 4 and y = 2)

The claim is that the proportion of peas with yellow pods is equal to 0.25 (or 25%). the sample statistics from one experiment include 480 480 peas with 127 127 of them having yellow pods. find the value of the test statistic.

90% of students at a university use a backpack, while the rest do not. Of all the students, 50% carry their laptops with them and 5% carry neither a backpack nor laptop. What percentage of students carry their laptops and use a backpack?