The radius of a fluorine atom is about 5 x 10^-8 millimeter. The radius of a strontium atom is about 2 x 10^-7 millimeter.
About how many times larger is the radius of a strontium atom than the radius of a fluorine atom?

-3/20000000

Step-by-step explanation: I just subtracted the 2

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

answer is 12345678900987654321234567890987654321

step-by-step explanation: