Which of these is a literal equation? A. 3x - 4y
B. 12 = 9 + 3x
C. ax - by = k
D.6 + 30 = 6²

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Given that abcd is a rhombus, what is the value of x?

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?