The month of January has 31 days, so from January 1st to February 14th, there are 31 + 14 or 45 days, namely x = 45.
y = 3.06 * sin[ 0.017(45) - 1.40 ] + 12.23.
make sure your calculator is in Degree mode.
U think it’s 40 cuz 8 x40 equal 320 ;-; if it’s wrong my name will come to use
In her second month, she spent $92.23
you just do 305.43 - 213.20 = 92.23
Answer:
A and B
Step-by-step explanation:
You can take a look at a unit circle to find the solution to this problem (see below).

Hope this helps!