Evaluate the expression
a, 25x2³- 3²+125
b, 21x[(1245+987):2³-15x12] +21

Amonument at a park is in the shape of a right square pyramid. a diagram of the pyramid and its net are shown. what is the surface area of the monument? enter the answer in the box. m²

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

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