Over the last 2.5 years, the water level in a lake has changed by -0.3 feet per year. Scientists predict that the water level will continue to go down for the next 5 years at a rate of 0.4 feet per year. What rational number represents the overall change of the water level after 7.5 years?

Question 3 (essay worth 10 points) (03.06 mc) part a: max rented a motorbike at $465 for 5 days. if he rents the same motorbike for a week, he has to pay a total rent of $625. write an equation in the standard form to represent the total rent (y) that max has to pay for renting the motorbike for x days. (4 points) part b: write the equation obtained in part a using function notation. (2 points) part c: describe the steps to graph the equation obtained above on the coordinate axes. mention the labels on the axes and the intervals. (4 points)

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.