Cambridge's earnings

number of lawns earnings
0 $0.00
1 $16.50
2 $33.00
3 $49.5
4 $66.00
5 $82.50

cambridge has a job mowing lawns. he mowed 5 lawns last week and earned $82.50. the table shows his earnings for the week. which coordinate pair represents the unit rate for this situation?
a)
(0, 0)
b)
(1, 16.5)
c)
(3, 49.5)
d)
(5, 82.5)

Which two properties of equality could zoe use to finish solving for x? the equation is 3x - 4 = -10 for x so a either the addition or subtraction property of equalityb ether the multiplication or division property of equality c ether the addition or division property of equality d ether the subtraction or division property of equality just a simple a b c or d plz.