5) Sandy bought a soft drink for 4 dollars and 7 candy bars. She spent a total of 39
dollars. How much did each candy bar
cost?
a :
a)Define the variable (Write a let statement):
b) Write the equation:
c) Solve:

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.