A random sample of size 25 from a normal population has the mean = 47.5 and the standard deviation s = 8.4. does this information tend to support or refuse the claim that the mean of the population is = 42.1

Write the following equation. The sum of four times a number, and 3, is equal to three times the number.

Solve. - 1.2z-8.2>-9.7

Eric bought 12.4 gallons of gasoline for $3.40 a gallon. How much did he pay for the gasoline?

14. Joe is looking to buy a house with an assessed value of $185,000 and wants to calculate how much he has to pay each year for his homeowner's insurance. If his annual premium rate is $0.90 per $100, what is his annual premium? A. $2,384.00 B.

Of the 50 students who took the test 23 earned A's what percent of the students earned A's

Using 4, 16, 10, 24, and 25 create a problem in which the answer equals 1. You may use operations more than once.

Silas took 13 bags of glass to the recycling center. He still has 11 bags of plastic to take to the recycling center. Which equation could be used to find x, the total number of bags of glass and plastic Silas will take to the recycling center? A.

In a certain Algebra 2 class of 21 students, 6 of them play basketball and 14 of them play baseball. There are 5 students who play neither sport.

The product of my number and twice my number is 128. what is half my number? Explain how to solve the problem.

What is the rule that describes this pattern of numbers? 2, 3, 5, 7, 11, 13, 17, 19, 23, 29