What is the ferenheit tempature of -10, 0, 15, 100 using this formula F=9/5+32?

Answer 1

-10 = 14F
0= 32F
15= 59F
100= 212

Answer 2

Your formula is missing the Celsius term. It should read

F = 9/5*C + 32

Equivalently, F = 1.8*C + 32, which I find easier. I can never remember the 9/5 vs 5/9 thing

Simply substitute in the numbers that you have been given

For example, your first one
F = 9(-10)/5 + 32 = -18 + 32 = 14

And your last one
F = 9(100)/5 + 32 = 180 + 32 = 212

Do the others in the same way