5 (n + 3) - 7n when n = 1/2

An engineer scale model shows a building that is 3 inches tall. If the scale is 1 inch = 600 feet, how tall is the actual building in feet?

A yield sign measures 30 inches on all three sides. what is the area of the sign

If you spend $55 for transportation and clear $250 a month, what percent of your income do you spend on transportation? Round to the nearest tenth.

What is the slope-intercept form of the equation of the line that passes through (7, 3) and is Perpendicular to the line of the equation y = (-1/15) x - 10.

A rectangular crate has the dimensions of 32.1 inches by 28.2 inches by 1 foot What is the volume of the crate?

Which number would not be in scientific notation? 4.5 x 10^4 6 x 10^7 12.5 x 10^3 4.2 x 10^-8 2.355 x 10 ^5 0.45 x 10^3

Circular gears P and Q start rotating at the same time at constant speeds. Gear P makes 10 revolutions per minute and Gear Q makes 40 revolutions per minute.

There are over 2,700 species of snakes in the world. Over 600 species are venomous. Write the fraction of species that are not venomous as a decimal

A recipe calls for 2 tsp of butter. Melinda wants to make 40% more servings than the recipe makes. Which expression represents how many teaspoons of butter Melinda should use? A. 0.6 2 B. 1.6 2 C. 0.4 2 D. 1.4 2

Select all of the solutions of 4x2 - 36 = 0. If there are no solutions, select the empty set. -3 -3/2 3/2 3 {}