What is 7.8x10^5 hours in daysb

a. 1.872 x 10^8
b. 1.872 x 10^4
c. 3.250 x 10^6
d. 3.250 x 10^4

Just tell me how to set up the equation.

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?

Consider the enlargement of the pentagon. what is the value of x, rounded to the nearest tenth? 2.1 centimeters 3.3 centimeters 7.0 centimeters 15.0 centimeters