Bobby bought a DVD recorder for $280. Now it's in sale for $220. Find the percent of change in price. Round to the nearest whole percent if necessary.

Solve: 3x 12-{2x-[5 (x-3) - 3]=3 (x-5)

Ella deposited $2500 into a savings account. The relationship between the time, t, in years, since the account was first opened, and Ella's account balance, B (t), in dollars, is modeled by the following function. B (t) = 2500⋅e^0.

In a sample of 150 cars, 18 cars failed a safety inspection. The sampling method had a margin of error of 0.02 What is the interval estimate for the proportion that would fail in the form (lower limit, upper limit) ?

Leah measured the elementary school and made a scale drawing. She used the scale 1 centimeter : 4 meters. The school yard is 60 meters wide in real life. How wide is the school yard in the drawing?

In an insect colony, there are 270 insects after 7 days. If there were initially 80 insects, how long will it take the population to grow to 700 insects?

A line is imaginary. True or False?

Exercise Each pair of figures is similar Find the value of the factor in the endangement

Which of the following describes the meaning of surface area of a solid? the amount of solid can hold the total area of all the surfaces the area of the base of the solid the total area of one of the faces of the solid

What crisis did president carter face during his presidency? A.) the explosion of a u. s space shuttle. B. the breaking apart of the soviet union. C. the taking of american hostages in Iran

Jake is younger than Sophie. sophie is 14 years old