Answer:
5 per hour
Step-by-step explanation:
15 miles the total amount he ran divided by 3 the total amount of time
15/3=5 so John ran 5 mph
=log10x(x-3)=1
=x(x-3)=10
=x^2-3x=10
Make this a quadratic equation
x^2-3x-10=0
Factorize
=(x+2)(x-5)=0
x=-2 or x=5
1 and 25... primes cant be be multiplied by 1 and itself.