Lissette's age is 3 years less than twice the age of her sister Francesca. Lissette is 13. Write an equation that can be used to find Francescas age, f.

2f-3=13

Step-by-step explanation:

2f -3 = 13

   +3 +3

2f = 16

/2    / 2

f=8

an altitude of 15,000 feet

step-by-step explanation:

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.