The cost of burgers varies directly with the number of burgers purchased. If 30 burgers cost $45.00, what is the price of 20 burgers?
Write an equation to represent the situation.
What would 20 burgers cost?

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

The table represents a linear function. what is the slope of the function? –6 –4 4 6

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?