HCF of 50 and 90.find the answer pl

Allie answered 72% of the questions on her math test correctly. if she answered 18 questions correctly, how many questions were on the test?

This is so hard and it’s for a test

Which of the following describes the graph of y--4x-36 compared to the parent square root function? stretched by a factor of 2, reflected over the x-axis, and translated 9 units right stretched by a factor of 2, reflected over the x-axis, and translated 9 units left stretched by a factor of 2, reflected over the y-axis, and translated 9 units right stretched by a factor of 2, reflected over the y-axis, and translated 9 units left save and exit next submit