Cory stacked 1 1/4 inch thick boards on top of each other. When he finished stacking boards, the stack was 11 1/4 inches
high. How many boards did he stack?

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Adeposit of 5500 at 6% for 3 years equals

Y+ 2/y is it a polynomial in one variable or not? and if so, why?