Nicole and Kim each improved their yards by planting grass sod and shrubs. They bought their
supplies from the same store. Nicole spent $69
on one ft2 of grass sod and 6 shrubs. Kim spent $80
on one ft2 of grass sod and 7 shrubs. What is the
cost of one ft2 of grass sod and the cost of one shrub?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

Math i have no idea how to do a and b

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.