Which equation represents a proportional relationship? y= 1 /2x or y=2(x+ 1 3 ) or y = 3x or y=−3x+2

Which of the following expressions is equal to 2x^2+8

Javier bought a painting for $150. each year, the painting's value increases by a factor of 1.15. which expression gives the painting's value after 77 years?

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.