Joshua has a baseball card collection.84 cards make up 70% of his collection how many cards are in his total collection

How do you multiply a mixed fraction by a regular fraction

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?

Percent increase and decrease. original number: 45 new number: 18