# Algebra

Solve. Please show the algebraic inequality you used and show all of your work.

Stephanie has the following scores on her algebra tests: 85, 92, and 71. What score must she earn on her fourth test in order to have an average of 80 or above?

1. 👍 0
2. 👎 0
3. 👁 55
1. (85+92+71+x)/4 ≥ 80

Solve for x.

1. 👍 0
2. 👎 0
posted by PsyDAG
2. 1.2

1. 👍 0
2. 👎 0
3. x>=4*80-85-92-71=320-85-92-71=320-248=72

1. 👍 0
2. 👎 0
posted by Yariv

## Similar Questions

1. ### math

2. Simplify. Please be sure to show all of your work. -3(-9) – |-5 – 3 3. Simplify. Please show all of your work 9c^3+7c-(3c^3-12+c) 4. Solve 4x- 3(5x-8) =23-9(x+2) . Please show all of your work 5. Solve the following

asked by christine on August 15, 2011
2. ### Math

Mrs.Perry hires a landscaper that charges \$15 per hr. The landscaper says the total charge for the work done is \$120.00 Write an inequality to show h, the number of hours it took to do the work and solve the inequality.

asked by Amy on March 16, 2016
3. ### math

Solve using the algebraic method. x+5=15 SHOW WORK thanx subtract five from each side. Do you have an allergy to showing work?

asked by lida on March 29, 2007
4. ### algebra 2

the 2 unequalities -26

asked by hannah on October 31, 2013
5. ### Math - Algebra

A. Solve the following quadratic equations. Make sure to show all your work. Do not use any method (e.g. factoring, completing the square, quadratic formula, graphing) more than twice. Use the graphing method at least once. 1.

asked by Angela Again! on January 9, 2007
6. ### calculus

solve the inequality e^x+e^x-x=6 can you show work

asked by Heather on January 6, 2013
7. ### alg

solve the following inequality x^2(8+x)(x-5)/(x+5)(x-2)>/=0 please show work

asked by MYA on September 5, 2012
8. ### Math

Solve the inequality. Show all work 2x^2+5x

asked by Rick on October 25, 2011
9. ### math

Joseph used the problem-solving strategy Work Backward to solve the inequality 2n+5

asked by kimie on November 20, 2015
10. ### Algebra

Solve each inequality algebraically:how do I solve this problem? What is the answer? Show the work. x+4/x-2 less than equal 1 thanks for your help

asked by Jackie C on January 11, 2013

More Similar Questions