Math ten points

nathan took his car in for service and repairs he had a coupon for 15 % off.

.labor $268.38
.parts $382.69
.other $68.34

which amount is closest to nathans total costs after the 15% discount and including 7% sales tax ? (assume tax is applied after the discount is applied)

a.$561
b.611
c.569
$654

100 points, hi, i’m not sure what to do here,the data doesn’t seem to be quadratic .? can anyone me, in advance

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

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