Answer:

Step-by-step explanation:
Let the function of quantity in the lung of air be A(t)
So 
so, A(t) = Amax sin t + b
A(t) = 2.8t⇒ max
A(t) = 0.6t ⇒ min
max value of A(t) occur when sin(t) = 1
and min value of A(t) = 0
So b = 0.6
and A(max) = 2.2

at t = 2 sec volume of a is 0.6
So function reduce to

and t = 5 max value of volume is represent
so,

when t = 5

so the equation becomes

Sum = (-3) + (-6) = -9
Yards gained are positive, and yards lost are negative.
If you lose 3 yards on one play and 6 yards on another, you have lost a total of 9 yards.
Answer:
x+(x+4)=52
Step-by-step explanation:
let the small number be x
The greater number is 4 more than the small number=x+4
sum of numbers= x+ (x+4)