The number 2 - 0.5 is how many times the number 1 - 0.5 ?

If x = - ~$\frac{5}{8}$~ and y = -~$\frac{1}{2}$~ , what is the value of the expression ~$-2x - y^2$~ ?

For what value of x between -4 and 4, inclusive, is the value of ~$ x^2 - 10x + 16 $~ the greatest?

The toll T, in dollars, for a truck using a certain bridge is given by the formula ~$T =1.50 + 0.50(x - 2),$~ where x is the number of axles on the truck. What is the toll for an 18-wheel truck that has 2 wheels on its front axle and 4 wheels on each of its other axles?

A grocer has 400 pounds of coffee in stock, 20 percent of which is decaffeinated. If the grocer buys another 100 pounds of coffee of which 60 percent is decaffeinated, what percent, by weight, of the grocer's stock of coffee is decaffeinated?

If Mario was 32 years old 8 years ago, how old was he x years ago?

If ~$\frac{x}{4}$~ is 2 more than ~$\frac{x}{8}$~ , then ~$x=$~ 

Which of the following represent positive numbers?

I. -3 - (-5）

II. (-3)(-5)

III. -5 - (-3）

There are five sales agents in a certain real estate office. One month Andy sold twice as many properties as Ellen, Bob sold 3 more than Ellen, Cary sold twice as many as Bob, and Dora sold as many as Bob and Ellen together. Who sold the most properties that month?

Guadalupe owns 2 rectangular tracts of land. One is 300 m by 500 m and the other is 250 m by 630 m. The combined area of these 2 tracts is how many square meters?