Similar triangles word problem i cannot get the answer to Kaylee is 100 cm tall and is standing so
that her mother’s shadow covers her
shadow. She is 90 cm from her mother
and her mother’s shadow is 225 cm
long. How tall is her mother? Express
your answer to the nearest centimetre

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

What percent of 18 is 24? and plz explain thx.

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)