Timed ! will award !

if f(x) = x^2 + 3x + 5 , what is f (a + h) ?

a. (a+h)^2 + 3(a+h) + 5(a+h)
b. a^2 + 2ah + h^2 + 3a + 3h + 5
c. h^2 + 3a + 3h + 5
d. (x^2 + 3ax + 5) (a + h)

the answer is A, what they changed is the (x) with (a+h), so the right side equation should be changed the same way just like A.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.