A certain cosine function has an amplitude of 5. Which function rule could model this situation? a) f(x)=5cos(x)+3f(x)=5cos(x)+3

b) f(x)=3cos(x)+5f(x)=3cos(x)+5

c) f(x)=cos(5x)+3f(x)=cos(5x)+3

d) f(x)=cos(3x)+5

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18