Does is matter what interval you use when you find the rate of change of a proportional realatopnahip

Mariela bought 15 pounds of birdseed for $10.00. Mark bought 12 pounds of birdseed for $8.00. Daryl bought 18 pounds of birdseed for $12.00. If the cost per pound remains the same, what should be the cost of one pound of birdseed?

Consider the system below that has the solution (2, - 3), where A, B, C, D, E, and F are non-zero real numbers

How I solve 2x-1=10? Thx

Find the taxable income of a married couple with one child, who has a combined income of $23,000.

Find the median number of magazines purchased in a store by 4 customers. 10, 55, 34, 21

6 to the 4th power x 6 to the 4th power

12 gallons to 36 gallons. Find the percent of change

Use complete sentences to describe the similarities and differences between an expression and an equation.

8m-6n if n = - 7 and n = - 6

Roberto says the opposite of a certain integer is - 5. Cindy concludes that the opposite of integer is always negative explain cindys error