A radio telescope has a parabolic surface, as shown below. If the telescope is 5 m deep and 40 m wide, how far is the focus from the vertex? *

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)

Which of the following scenarios demonstrates an exponential decay