16x^4-25 Which pattern can we use to factor the expression?

Andrea went to the store to buy sweater that was on sale for 40% off the original price it was then put on clearance an additional 25% off the sale price she also use a coupon that saved her an additional five dollars and j did not spend more than $7.60 for the sweater what are the possible values for the original price of the sweater?

Can someone answer it, and plot it, for 20 points and brainliest answer? p. s. they're the same ! : )

For the equations below which statement is true ? -2x=14 6x=-42