Answer:
a) 210
b) 350
c) 0.7x or 70%(x)
Step-by-step explanation:
since 7/10 students are attending we know that 70% of the students are attending.
in order to find the answer(s) you just multiply the given value by 70% or 0.7
so,
300*0.7 = 210
500*0.7 = 350
x*0.7 = 0.7x