Which two of the objects shown below could we slice perpendicular to their bases/faces to create triangle cross-sections?

Nine more than four times a number is the same as one less than twice the number. find the number?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

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?