HELP PLEASE PLEASE PLEASE PLEASE PLEASE At midnight, at high tide, the depth of water on a beach is 7 feet. Six and one-half hours later, the depth of the water at low tide is 3 feet. Assume that the depth of the water varies sinusoidally with time. Let t represent the number of hours since midnight.

a. The amplitude is _?
b. The period is _?
C. The phase shift is _?
d. The midline is y _?

What is the depth of the water att = 4 hours?

where's the diagrams?

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)

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas