What does the letter x stand for in 2x+5

2/4 of the candy bars at the store and there where 12 candy bars, how many would she buy

Given a circle with a diameter of 4, what is the circumference? A) 3 pi B) 4 pi C) 6 pi D) 8 pi

Which two units of measurement are commonly used to measure heat?

What is {[ (4*3) : 2]+3}*6

How many seconds are in 4:23:15

In 1980, wind turbines in Europe generated about 5 gigawatt-hours of energy. Over the next 15 years, the amount of energy increased about 59% (each year). How many gigawatt-hours were generated?

Po is trying to solve the following equation by completing the square: 49x^2+56x-64 = 0. He successfully rewrites the above equation in the following form: (ax + b) ^2 = c, where a, b, and c are integers and a > 0.

Tyler used 18 kilograms of potting soil to fill flower boxes. He had already used 23 kilograms of potting soil to fill the flower pots. How many kilograms of potting soil did Tyler use in all?

What is 4 5/6 as a decimal

Martin has $200 in a savings account. he is looking at 2 investment plans. under a, he will increase gis account balance by $40 each year. under B he will increase his account balance by 15% each year.