PLEASE HELP Jina has d decks of cards. Each deck has 52 cards in it. Using d, write an expression for the total number of cards Jina has.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .