The amount of nitrogen dioxide, a brown gas that impairs breathing, present in the atmosphere on a certain may day in the city of long beach is approximated by

a(t) = 136/1+ 0.24(t − 4.5)^2 + 28 (0 ≤ t ≤ 11) where a(t) is measured in pollutant standard index (psi) and t is measured in hours, with t = 0 corresponding to 7 a. m. determine the time of day when the pollution is at its highest level.

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.