If f (x) = 7x to the second power + 3x+1 then find the the value of f (-2)

Suppose we take repeated random samples of 50 college students from the same population and determine a 95% confidence interval for the mean GPA from each sample. Which of the following statements is true regarding the confidence intervals? A.

if one person walked 1.2miles and the other walked 0.8 miles and they made 120.00 how much money did each one make

Given that 2^x=7 then what is 4^x-1

A 20$ bill, two 10$ bills, three $5 bills and four $1 bills are placed in a bag. If a bill is chosen at random, what is the expected value for the amount chosen?

The average grain of salt is 0.0003 meters wide. Rhinovirus, which causes the common cold, is 0.00000003 meters wide. How many times wider is a grain of salt than Rhinovirus?

Your class has 30 students. One-third of them walk to school. How many students in your class walk to school?

Rhonda filled her aquarium with water. Then, she took out 3 gallons to make room for the gravel and fish. She added 2 quarts back in. Then, she added 4 fish. Each fish was in a separate bag with 1 pint of water.

How many grams are there in 2.5 kilograms

The length of a rectangle is three times the width. The area of the rectangle is 108 sq in. What is the width of the rectangle? 6 in. 9 in. 12 in. 36 in.

nancy bought 7 1/2 gallons of milk for the school cafeteria. she bought only half-gallon containers. how many half gallon containers did she buy