If you looked it up online you could find it. look on safari
Answer: 5 cos x
<u>Step-by-step explanation:</u>
y = sin x is y = cos x shifted to the right π/2 units.
y = 5 sin (x + π/2) is a shift to the left π/2 units (which results in cos x) and . an amplitude of 5.
--> y = 5 cos x
Answer:

Step-by-step explanation:

Answer:
this is a trick question her brother had 9 marbles but lost 2 so either they all got 9 marbles which means they bought 45 marbles.
Step-by-step explanation:
9 times 4 is 45