Which costs the least per ounce?(1 point)

A 60 oz. of chocolate for $5.40
B 35 oz. of chocolate for 3.16
C 16 oz. of chocolate for 1.79
D. oz. of chocolate for 2.24

Solve the following two-step equation for x. 3x - 12= 21 (1 point)
A x=10
B x=11
C x=3
D x=4
Hugo just bought a new pair of jeans at the mall. The jeans cost $45.99 and tax is 7%. What will he have to pay for the jeans in total? (Round to the nearest cent.)
A $49.21
B $46.06
C $48.99
D $42.77
Find the product. (-2)(15)
A 13
B -13
C 30
D -30

The correct answers are:

1. C 16 oz. of chocolate for $1.79
2. B x=11
3. B $46.06
4. C 30