Adining set is priced at $785. if the sales tax is 7 percent, what is the cost to purchase the dining set? round to the nearest cent if necessary. $54.95 $792.00 $839.95 $1134.50

$839.95

Step-by-step explanation:

Sales tax = 7 % × cost

Sales tax = 0.07 × 785

Sales tax = $54.95

Cost = price + sales tax

Cost = 785 + 54.95

Cost = $839.95

The cost to purchase is $839.95.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form