While on vacation in Lancaster, David went out for a dinner that cost $75. If sales tax in Lancaster is 4% and David left a 20% tip on $75, what was the total cost of his meal?

$93.

Step-by-step explanation:

Given that David went out for a dinner that cost $ 75, the price at which a sales tax of 4% was applied, and left a 20% tip on $ 75, to determine the total cost of his meal the following calculation must be performed:

75 + (75 x 0.2) + (75 x 0.04) = X

75 + 15 + 3 = X

93 = X

Therefore, the total cost he payed for his meal was $ 93.

d)  y = -2x + 17.

Step-by-step explanation:

Use the point-slope for  of the equation of a line:

y - y1 = m(x - x1)  where m = the slope and (x1, y1) is a point on the line.

So here we have:

y - 5 = -2(x - 6)

y = -2x + 12 + 5

y = -2x + 17.