can someone explain to me how to do solving percent problems? i do not get it not one bit at all, example: 18 is 54% of what number

A circle has a diameter of 6 inches. Hoshi found the area by wrongly using the diameter instead of radius in the area formula. How many times greater is the area of the circle Hoshi found compared to the actual area? Explain how you know.

Mark records his science scores in each monthly assessment over a period of 5 months. In the first assessment he scores 76%. In the second assessment he scores 73%. After that, his scores keep increasing by 2% in every assessment.

graph the linear equation y=3x+3

3x+7=13 (x=-2; x=2; x=5)

A 100g ball is placed into a graduated cylinder before the ball was placed inside the water was at 50ml but the ball is 105ml after the ball is placed what is the density of the ball

Factor of 3x^2 - 6x 3

If i have 7 dollars and i get 10 every 2 weeks how much many would i have by june 26

In a circle with a radius of 12.6 ft, an arc is intercepted by a central angle of 2π/7 radians. What is the arc length? Use 3.14 for π and round your final answer to the nearest hundredth. Enter your answer as a decimal in the box.

Estimate 3,245 : 8 =

What is the expression equivalent to 3 (6m) + m?